/*
    * Licensed to the Apache Software Foundation (ASF) under one
    * or more contributor license agreements.  See the NOTICE file
    * distributed with this work for additional information
    * regarding copyright ownership.  The ASF licenses this file
    * to you under the Apache License, Version 2.0 (the
    * "License"); you may not use this file except in compliance
    * with the License.  You may obtain a copy of the License at
    *
   *   http://www.apache.org/licenses/LICENSE-2.0
   *
   * Unless required by applicable law or agreed to in writing,
   * software distributed under the License is distributed on an
   * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
   * KIND, either express or implied.  See the License for the
   * specific language governing permissions and limitations
   * under the License.
   */
  package org.apache.maven.plugins.javadoc;
  
  import java.io.BufferedReader;
  import java.io.File;
  import java.io.IOException;
  import java.io.InputStream;
  import java.io.StringReader;
  import java.io.StringWriter;
  import java.lang.reflect.Method;
  import java.net.MalformedURLException;
  import java.net.URISyntaxException;
  import java.net.URL;
  import java.net.URLClassLoader;
  import java.nio.file.Paths;
  import java.util.ArrayList;
  import java.util.Arrays;
  import java.util.Collection;
  import java.util.Collections;
  import java.util.HashSet;
  import java.util.Iterator;
  import java.util.LinkedHashMap;
  import java.util.LinkedList;
  import java.util.List;
  import java.util.Locale;
  import java.util.Map;
  import java.util.Properties;
  import java.util.Set;
  import java.util.StringTokenizer;
  import java.util.regex.Matcher;
  import java.util.regex.Pattern;
  
  import com.thoughtworks.qdox.JavaProjectBuilder;
  import com.thoughtworks.qdox.library.ClassLibraryBuilder;
  import com.thoughtworks.qdox.library.OrderedClassLibraryBuilder;
  import com.thoughtworks.qdox.model.DocletTag;
  import com.thoughtworks.qdox.model.JavaAnnotatedElement;
  import com.thoughtworks.qdox.model.JavaAnnotation;
  import com.thoughtworks.qdox.model.JavaClass;
  import com.thoughtworks.qdox.model.JavaConstructor;
  import com.thoughtworks.qdox.model.JavaExecutable;
  import com.thoughtworks.qdox.model.JavaField;
  import com.thoughtworks.qdox.model.JavaGenericDeclaration;
  import com.thoughtworks.qdox.model.JavaMember;
  import com.thoughtworks.qdox.model.JavaMethod;
  import com.thoughtworks.qdox.model.JavaParameter;
  import com.thoughtworks.qdox.model.JavaType;
  import com.thoughtworks.qdox.model.JavaTypeVariable;
  import com.thoughtworks.qdox.parser.ParseException;
  import com.thoughtworks.qdox.type.TypeResolver;
  import org.apache.commons.lang3.ClassUtils;
  import org.apache.commons.text.StringEscapeUtils;
  import org.apache.maven.artifact.Artifact;
  import org.apache.maven.artifact.DependencyResolutionRequiredException;
  import org.apache.maven.artifact.repository.ArtifactRepository;
  import org.apache.maven.execution.MavenSession;
  import org.apache.maven.plugin.AbstractMojo;
  import org.apache.maven.plugin.MojoExecutionException;
  import org.apache.maven.plugin.MojoFailureException;
  import org.apache.maven.plugins.annotations.Component;
  import org.apache.maven.plugins.annotations.Parameter;
  import org.apache.maven.project.MavenProject;
  import org.apache.maven.settings.Settings;
  import org.apache.maven.shared.invoker.MavenInvocationException;
  import org.codehaus.plexus.components.interactivity.InputHandler;
  import org.codehaus.plexus.languages.java.version.JavaVersion;
  import org.codehaus.plexus.util.FileUtils;
  import org.codehaus.plexus.util.ReaderFactory;
  import org.codehaus.plexus.util.StringUtils;
  
  /**
   * Abstract class to fix Javadoc documentation and tags in source files.
   * @see <a href="https://docs.oracle.com/en/java/javase/17/docs/specs/javadoc/doc-comment-spec.html#where-tags-can-be-used">Where Tags
   * Can Be Used</a>.
   * @author <a href="mailto:vincent.siveton@gmail.com">Vincent Siveton</a>
   * @since 2.6
   */
  public abstract class AbstractFixJavadocMojo extends AbstractMojo {
      /**
       * The vm line separator
       */
      private static final String EOL = System.getProperty("line.separator");
 
     /**
      * Tag name for &#64;author *
      */
     private static final String AUTHOR_TAG = "author";
 
     /**
      * Tag name for &#64;version *
      */
     private static final String VERSION_TAG = "version";
 
     /**
      * Tag name for &#64;since *
      */
     private static final String SINCE_TAG = "since";
 
     /**
      * Tag name for &#64;param *
      */
     private static final String PARAM_TAG = "param";
 
     /**
      * Tag name for &#64;return *
      */
     private static final String RETURN_TAG = "return";
 
     /**
      * Tag name for &#64;throws *
      */
     private static final String THROWS_TAG = "throws";
 
     /**
      * Tag name for &#64;link *
      */
     private static final String LINK_TAG = "link";
 
     /**
      * Tag name for {&#64;inheritDoc} *
      */
     private static final String INHERITED_TAG = "{@inheritDoc}";
 
     /**
      * Start Javadoc String i.e. <code>&#47;&#42;&#42;</code> *
      */
     private static final String START_JAVADOC = "/**";
 
     /**
      * End Javadoc String i.e. <code>&#42;&#47;</code> *
      */
     private static final String END_JAVADOC = "*/";
 
     /**
      * Javadoc Separator i.e. <code> &#42; </code> *
      */
     private static final String SEPARATOR_JAVADOC = " * ";
 
     /**
      * Inherited Javadoc i.e. <code>&#47;&#42;&#42; {&#64;inheritDoc} &#42;&#47;</code> *
      */
     private static final String INHERITED_JAVADOC = START_JAVADOC + " " + INHERITED_TAG + " " + END_JAVADOC;
 
     /**
      * <code>all</code> parameter used by {@link #fixTags} *
      */
     private static final String FIX_TAGS_ALL = "all";
 
     /**
      * <code>public</code> parameter used by {@link #level} *
      */
     private static final String LEVEL_PUBLIC = "public";
 
     /**
      * <code>protected</code> parameter used by {@link #level} *
      */
     private static final String LEVEL_PROTECTED = "protected";
 
     /**
      * <code>package</code> parameter used by {@link #level} *
      */
     private static final String LEVEL_PACKAGE = "package";
 
     /**
      * <code>private</code> parameter used by {@link #level} *
      */
     private static final String LEVEL_PRIVATE = "private";
 
     /**
      * The Clirr Maven plugin groupId <code>org.codehaus.mojo</code> *
      */
     private static final String CLIRR_MAVEN_PLUGIN_GROUPID = "org.codehaus.mojo";
 
     /**
      * The Clirr Maven plugin artifactId <code>clirr-maven-plugin</code> *
      */
     private static final String CLIRR_MAVEN_PLUGIN_ARTIFACTID = "clirr-maven-plugin";
 
     /**
      * The latest Clirr Maven plugin version <code>2.2.2</code> *
      */
     private static final String CLIRR_MAVEN_PLUGIN_VERSION = "2.2.2";
 
     /**
      * The Clirr Maven plugin goal <code>check</code> *
      */
     private static final String CLIRR_MAVEN_PLUGIN_GOAL = "check";
 
     /**
      * Java Files Pattern.
      */
     public static final String JAVA_FILES = "**\\/*.java";
 
     /**
      * Default version value.
      */
     public static final String DEFAULT_VERSION_VALUE = "\u0024Id: \u0024Id";
 
     // ----------------------------------------------------------------------
     // Mojo components
     // ----------------------------------------------------------------------
 
     /**
      * Input handler, needed for command line handling.
      */
     @Component
     private InputHandler inputHandler;
 
     // ----------------------------------------------------------------------
     // Mojo parameters
     // ----------------------------------------------------------------------
 
     /**
      * Version to compare the current code against using the
      * <a href="http://mojo.codehaus.org/clirr-maven-plugin/">Clirr Maven Plugin</a>.
      * <br/>
      * See <a href="#defaultSince">defaultSince</a>.
      */
     @Parameter(property = "comparisonVersion", defaultValue = "(,${project.version})")
     private String comparisonVersion;
 
     /**
      * Default value for the Javadoc tag <code>&#64;author</code>.
      * <br/>
      * If not specified, the <code>user.name</code> defined in the System properties will be used.
      */
     @Parameter(property = "defaultAuthor")
     private String defaultAuthor;
 
     /**
      * Default value for the Javadoc tag <code>&#64;since</code>.
      */
     @Parameter(property = "defaultSince", defaultValue = "${project.version}")
     private String defaultSince;
 
     /**
      * Default value for the Javadoc tag <code>&#64;version</code>.
      * <br/>
      * By default, it is <code>&#36;Id:&#36;</code>, corresponding to a
      * <a href="http://svnbook.red-bean.com/en/1.1/ch07s02.html#svn-ch-7-sect-2.3.4">SVN keyword</a>.
      * Refer to your SCM to use an other SCM keyword.
      */
     @Parameter(property = "defaultVersion", defaultValue = DEFAULT_VERSION_VALUE)
     private String defaultVersion = "\u0024Id: \u0024"; // can't use default-value="\u0024Id: \u0024"
 
     /**
      * The file encoding to use when reading the source files. If the property
      * <code>project.build.sourceEncoding</code> is not set, the platform default encoding is used.
      */
     @Parameter(property = "encoding", defaultValue = "${project.build.sourceEncoding}")
     private String encoding;
 
     /**
      * Comma separated excludes Java files, i.e. <code>&#42;&#42;/&#42;Test.java</code>.
      */
     @Parameter(property = "excludes")
     private String excludes;
 
     /**
      * Comma separated tags to fix in classes, interfaces or methods Javadoc comments.
      * Possible values are:
      * <ul>
      * <li>all (fix all Javadoc tags)</li>
      * <li>author (fix only &#64;author tag)</li>
      * <li>version (fix only &#64;version tag)</li>
      * <li>since (fix only &#64;since tag)</li>
      * <li>param (fix only &#64;param tag)</li>
      * <li>return (fix only &#64;return tag)</li>
      * <li>throws (fix only &#64;throws tag)</li>
      * <li>link (fix only &#64;link tag)</li>
      * </ul>
      */
     @Parameter(property = "fixTags", defaultValue = "all")
     private String fixTags;
 
     /**
      * Flag to fix the classes or interfaces Javadoc comments according the <code>level</code>.
      */
     @Parameter(property = "fixClassComment", defaultValue = "true")
     private boolean fixClassComment;
 
     /**
      * Flag to fix the fields Javadoc comments according the <code>level</code>.
      */
     @Parameter(property = "fixFieldComment", defaultValue = "true")
     private boolean fixFieldComment;
 
     /**
      * Flag to fix the methods Javadoc comments according the <code>level</code>.
      */
     @Parameter(property = "fixMethodComment", defaultValue = "true")
     private boolean fixMethodComment;
 
     /**
      * <p>Flag to remove throws tags from unknown classes.</p>
      * <p><strong>NOTE:</strong>Since 3.1.0 the default value has been changed to {@code true},
      * due to JavaDoc 8 strictness.
      */
     @Parameter(property = "removeUnknownThrows", defaultValue = "true")
     private boolean removeUnknownThrows;
 
     /**
      * Forcing the goal execution i.e. skip warranty messages (not recommended).
      */
     @Parameter(property = "force")
     private boolean force;
 
     /**
      * Flag to ignore or not Clirr.
      */
     @Parameter(property = "ignoreClirr", defaultValue = "false")
     protected boolean ignoreClirr;
 
     /**
      * Comma separated includes Java files, i.e. <code>&#42;&#42;/&#42;Test.java</code>.
      * <p/>
      * <strong>Note:</strong> default value is {@code **\/*.java}.
      */
     @Parameter(property = "includes", defaultValue = JAVA_FILES)
     private String includes;
 
     /**
      * Specifies the access level for classes and members to show in the Javadocs.
      * Possible values are:
      * <ul>
      * <li>public (shows only public classes and members)</li>
      * <li>protected (shows only public and protected classes and members)</li>
      * <li>package (shows all classes and members not marked private)</li>
      * <li>private (shows all classes and members)</li>
      * </ul>
      * @see <a href="https://docs.oracle.com/en/java/javase/17/docs/specs/man/javadoc.html#options-for-javadoc">private, protected, public, package options for Javadoc</a>
      */
     @Parameter(property = "level", defaultValue = "protected")
     private String level;
 
     /**
      * The local repository where the artifacts are located, used by the tests.
      */
     @Parameter(property = "localRepository")
     private ArtifactRepository localRepository;
 
     /**
      * Output directory where Java classes will be rewritten.
      */
     @Parameter(property = "outputDirectory", defaultValue = "${project.build.sourceDirectory}")
     private File outputDirectory;
 
     /**
      * The Maven Project Object.
      */
     @Parameter(defaultValue = "${project}", readonly = true, required = true)
     private MavenProject project;
 
     @Parameter(defaultValue = "${session}", readonly = true, required = true)
     private MavenSession session;
 
     /**
      * The current user system settings for use in Maven.
      */
     @Parameter(defaultValue = "${settings}", readonly = true, required = true)
     private Settings settings;
 
     // ----------------------------------------------------------------------
     // Internal fields
     // ----------------------------------------------------------------------
 
     /**
      * The current project class loader.
      */
     private ClassLoader projectClassLoader;
 
     /**
      * Split {@link #fixTags} by comma.
      *
      * @see #init()
      */
     private String[] fixTagsSplitted;
 
     /**
      * New classes found by Clirr.
      */
     private List<String> clirrNewClasses;
 
     /**
      * New Methods in a Class (the key) found by Clirr.
      */
     private Map<String, List<String>> clirrNewMethods;
 
     /**
      * List of classes where <code>&#42;since</code> is added. Will be used to add or not this tag in the methods.
      */
     private List<String> sinceClasses;
 
     /**
      * {@inheritDoc}
      */
     @Override
     public void execute() throws MojoExecutionException, MojoFailureException {
         if (!fixClassComment && !fixFieldComment && !fixMethodComment) {
             getLog().info("Specified to NOT fix classes, fields and methods. Nothing to do.");
             return;
         }
 
         // verify goal params
         init();
 
         if (fixTagsSplitted.length == 0) {
             getLog().info("No fix tag specified. Nothing to do.");
             return;
         }
 
         // add warranty msg
         if (!preCheck()) {
             return;
         }
 
         // run clirr
         try {
             executeClirr();
         } catch (MavenInvocationException e) {
             if (getLog().isDebugEnabled()) {
                 getLog().error("MavenInvocationException: " + e.getMessage(), e);
             } else {
                 getLog().error("MavenInvocationException: " + e.getMessage());
             }
             getLog().info("Clirr is ignored.");
         }
 
         // run qdox and process
         try {
             Collection<JavaClass> javaClasses = getQdoxClasses();
 
             if (javaClasses != null) {
                 for (JavaClass javaClass : javaClasses) {
                     processFix(javaClass);
                 }
             }
         } catch (IOException e) {
             throw new MojoExecutionException("IOException: " + e.getMessage(), e);
         }
     }
 
     // ----------------------------------------------------------------------
     // protected methods
     // ----------------------------------------------------------------------
 
     protected final MavenProject getProject() {
         return project;
     }
 
     /**
      * @param p not null maven project.
      * @return the artifact type.
      */
     protected String getArtifactType(MavenProject p) {
         return p.getArtifact().getType();
     }
 
     /**
      * @param p not null maven project.
      * @return the list of source paths for the given project.
      */
     protected List<String> getProjectSourceRoots(MavenProject p) {
         return (p.getCompileSourceRoots() == null
                 ? Collections.<String>emptyList()
                 : new LinkedList<>(p.getCompileSourceRoots()));
     }
 
     /**
      * @param p not null
      * @return the compile classpath elements
      * @throws DependencyResolutionRequiredException
      *          if any
      */
     protected List<String> getCompileClasspathElements(MavenProject p) throws DependencyResolutionRequiredException {
         return (p.getCompileClasspathElements() == null
                 ? Collections.<String>emptyList()
                 : new LinkedList<>(p.getCompileClasspathElements()));
     }
 
     /**
      * @param javaExecutable not null
      * @return the fully qualify name of javaMethod with signature
      */
     protected static String getJavaMethodAsString(JavaExecutable javaExecutable) {
         return javaExecutable.getDeclaringClass().getFullyQualifiedName() + "#" + javaExecutable.getCallSignature();
     }
 
     // ----------------------------------------------------------------------
     // private methods
     // ----------------------------------------------------------------------
 
     /**
      * Init goal parameters.
      */
     private void init() {
         // defaultAuthor
         if (StringUtils.isEmpty(defaultAuthor)) {
             defaultAuthor = System.getProperty("user.name");
         }
 
         // defaultSince
         int i = defaultSince.indexOf("-" + Artifact.SNAPSHOT_VERSION);
         if (i != -1) {
             defaultSince = defaultSince.substring(0, i);
         }
 
         // fixTags
         if (!FIX_TAGS_ALL.equalsIgnoreCase(fixTags.trim())) {
             String[] split = StringUtils.split(fixTags, ",");
             List<String> filtered = new LinkedList<>();
             for (String aSplit : split) {
                 String s = aSplit.trim();
                 if (JavadocUtil.equalsIgnoreCase(
                         s,
                         FIX_TAGS_ALL,
                         AUTHOR_TAG,
                         VERSION_TAG,
                         SINCE_TAG,
                         PARAM_TAG,
                         THROWS_TAG,
                         LINK_TAG,
                         RETURN_TAG)) {
                     filtered.add(s);
                 } else {
                     if (getLog().isWarnEnabled()) {
                         getLog().warn("Unrecognized '" + s + "' for fixTags parameter. Ignored it!");
                     }
                 }
             }
             fixTags = StringUtils.join(filtered.iterator(), ",");
         }
         fixTagsSplitted = StringUtils.split(fixTags, ",");
 
         // encoding
         if (StringUtils.isEmpty(encoding)) {
             if (getLog().isWarnEnabled()) {
                 getLog().warn("File encoding has not been set, using platform encoding " + ReaderFactory.FILE_ENCODING
                         + ", i.e. build is platform dependent!");
             }
             encoding = ReaderFactory.FILE_ENCODING;
         }
 
         // level
         level = level.trim();
         if (!JavadocUtil.equalsIgnoreCase(level, LEVEL_PUBLIC, LEVEL_PROTECTED, LEVEL_PACKAGE, LEVEL_PRIVATE)) {
             if (getLog().isWarnEnabled()) {
                 getLog().warn("Unrecognized '" + level + "' for level parameter, using 'protected' level.");
             }
             level = "protected";
         }
     }
 
     /**
      * @return <code>true</code> if the user wants to proceed, <code>false</code> otherwise.
      * @throws MojoExecutionException if any
      */
     private boolean preCheck() throws MojoExecutionException {
         if (force) {
             return true;
         }
 
         if (outputDirectory != null
                 && !outputDirectory
                         .getAbsolutePath()
                         .equals(getProjectSourceDirectory().getAbsolutePath())) {
             return true;
         }
 
         if (!settings.isInteractiveMode()) {
             getLog().error("Maven is not attempt to interact with the user for input. "
                     + "Verify the <interactiveMode/> configuration in your settings.");
             return false;
         }
 
         getLog().warn("");
         getLog().warn("    WARRANTY DISCLAIMER");
         getLog().warn("");
         getLog().warn("All warranties with regard to this Maven goal are disclaimed!");
         getLog().warn("The changes will be done directly in the source code.");
         getLog().warn("The Maven Team strongly recommends the use of a SCM software BEFORE executing this goal.");
         getLog().warn("");
 
         while (true) {
             getLog().info("Are you sure to proceed? [Y]es [N]o");
 
             try {
                 String userExpression = inputHandler.readLine();
                 if (userExpression == null || JavadocUtil.equalsIgnoreCase(userExpression, "Y", "Yes")) {
                     getLog().info("OK, let's proceed...");
                     break;
                 }
                 if (JavadocUtil.equalsIgnoreCase(userExpression, "N", "No")) {
                     getLog().info("No changes in your sources occur.");
                     return false;
                 }
             } catch (IOException e) {
                 throw new MojoExecutionException("Unable to read from standard input.", e);
             }
         }
 
         return true;
     }
 
     /**
      * @return the source dir as File for the given project
      */
     private File getProjectSourceDirectory() {
         return new File(project.getBuild().getSourceDirectory());
     }
 
     /**
      * Invoke Maven to run clirr-maven-plugin to find API differences.
      *
      * @throws MavenInvocationException if any
      */
     private void executeClirr() throws MavenInvocationException {
         if (ignoreClirr) {
             getLog().info("Clirr is ignored.");
             return;
         }
 
         String clirrGoal = getFullClirrGoal();
 
         // http://mojo.codehaus.org/clirr-maven-plugin/check-mojo.html
         File clirrTextOutputFile = FileUtils.createTempFile(
                 "clirr", ".txt", new File(project.getBuild().getDirectory()));
         Properties properties = new Properties();
         properties.put("textOutputFile", clirrTextOutputFile.getAbsolutePath());
         properties.put("comparisonVersion", comparisonVersion);
         properties.put("failOnError", "false");
         if (JavaVersion.JAVA_SPECIFICATION_VERSION.isBefore("8")) {
             // ensure that Java7 picks up TLSv1.2 when connecting with Central
             properties.put("https.protocols", "TLSv1.2");
         }
 
         File invokerDir = new File(project.getBuild().getDirectory(), "invoker");
         invokerDir.mkdirs();
         File invokerLogFile = FileUtils.createTempFile("clirr-maven-plugin", ".txt", invokerDir);
 
         JavadocUtil.invokeMaven(
                 getLog(),
                 new File(localRepository.getBasedir()),
                 project.getFile(),
                 Collections.singletonList(clirrGoal),
                 properties,
                 invokerLogFile,
                 session.getRequest().getGlobalSettingsFile());
 
         try {
             if (invokerLogFile.exists()) {
                 String invokerLogContent = StringUtils.unifyLineSeparators(FileUtils.fileRead(invokerLogFile, "UTF-8"));
                 // see org.codehaus.mojo.clirr.AbstractClirrMojo#getComparisonArtifact()
                 final String artifactNotFoundMsg = "Unable to find a previous version of the project in the repository";
                 if (invokerLogContent.contains(artifactNotFoundMsg)) {
                     getLog().warn("No previous artifact has been deployed, Clirr is ignored.");
                     return;
                 }
             }
         } catch (IOException e) {
             getLog().debug("IOException: " + e.getMessage());
         }
 
         try {
             parseClirrTextOutputFile(clirrTextOutputFile);
         } catch (IOException e) {
             if (getLog().isDebugEnabled()) {
                 getLog().debug("IOException: " + e.getMessage(), e);
             }
             getLog().info("IOException when parsing Clirr output '" + clirrTextOutputFile.getAbsolutePath()
                     + "', Clirr is ignored.");
         }
     }
 
     /**
      * @param clirrTextOutputFile not null
      * @throws IOException if any
      */
     private void parseClirrTextOutputFile(File clirrTextOutputFile) throws IOException {
         if (!clirrTextOutputFile.exists()) {
             if (getLog().isInfoEnabled()) {
                 getLog().info("No Clirr output file '" + clirrTextOutputFile.getAbsolutePath()
                         + "' exists, Clirr is ignored.");
             }
             return;
         }
 
         if (getLog().isInfoEnabled()) {
             getLog().info("Clirr output file was created: " + clirrTextOutputFile.getAbsolutePath());
         }
 
         clirrNewClasses = new LinkedList<>();
         clirrNewMethods = new LinkedHashMap<>();
 
         try (BufferedReader reader = new BufferedReader(ReaderFactory.newReader(clirrTextOutputFile, "UTF-8"))) {
 
             for (String line = reader.readLine(); line != null; line = reader.readLine()) {
                 String[] split = StringUtils.split(line, ":");
                 if (split.length != 4) {
                     if (getLog().isDebugEnabled()) {
                         getLog().debug("Unable to parse the clirr line: " + line);
                     }
                     continue;
                 }
 
                 int code;
                 try {
                     code = Integer.parseInt(split[1].trim());
                 } catch (NumberFormatException e) {
                     if (getLog().isDebugEnabled()) {
                         getLog().debug("Unable to parse the clirr line: " + line);
                     }
                     continue;
                 }
 
                 // http://clirr.sourceforge.net/clirr-core/exegesis.html
                 // 7011 - Method Added
                 // 7012 - Method Added to Interface
                 // 8000 - Class Added
 
                 // CHECKSTYLE_OFF: MagicNumber
                 switch (code) {
                     case 7011:
                         methodAdded(split);
                         break;
                     case 7012:
                         methodAdded(split);
                         break;
                     case 8000:
                         clirrNewClasses.add(split[2].trim());
                         break;
                     default:
                         break;
                 }
                 // CHECKSTYLE_ON: MagicNumber
             }
         }
         if (clirrNewClasses.isEmpty() && clirrNewMethods.isEmpty()) {
             getLog().info("Clirr NOT found API differences.");
         } else {
             getLog().info("Clirr found API differences, i.e. new classes/interfaces or methods.");
         }
     }
 
     private void methodAdded(String[] split) {
         List<String> list = clirrNewMethods.get(split[2].trim());
         if (list == null) {
             list = new ArrayList<>();
         }
         String[] splits2 = StringUtils.split(split[3].trim(), "'");
         if (splits2.length != 3) {
             return;
         }
         list.add(splits2[1].trim());
         clirrNewMethods.put(split[2].trim(), list);
     }
 
     /**
      * @param tag not null
      * @return <code>true</code> if <code>tag</code> is defined in {@link #fixTags}.
      */
     private boolean fixTag(String tag) {
         if (fixTagsSplitted.length == 1 && fixTagsSplitted[0].equals(FIX_TAGS_ALL)) {
             return true;
         }
 
         for (String aFixTagsSplitted : fixTagsSplitted) {
             if (aFixTagsSplitted.trim().equals(tag)) {
                 return true;
             }
         }
 
         return false;
     }
 
     /**
      * Calling Qdox to find {@link JavaClass} objects from the Maven project sources.
      * Ignore java class if Qdox has parsing errors.
      *
      * @return an array of {@link JavaClass} found by QDox
      * @throws IOException            if any
      * @throws MojoExecutionException if any
      */
     private Collection<JavaClass> getQdoxClasses() throws IOException, MojoExecutionException {
         if ("pom".equalsIgnoreCase(project.getPackaging())) {
             getLog().warn("This project has 'pom' packaging, no Java sources is available.");
             return null;
         }
 
         List<File> javaFiles = new LinkedList<>();
         for (String sourceRoot : getProjectSourceRoots(project)) {
             File f = new File(sourceRoot);
             if (f.isDirectory()) {
                 javaFiles.addAll(FileUtils.getFiles(f, includes, excludes, true));
             } else {
                 if (getLog().isWarnEnabled()) {
                     getLog().warn(f + " doesn't exist. Ignored it.");
                 }
             }
         }
 
         ClassLibraryBuilder classLibraryBuilder = new OrderedClassLibraryBuilder();
         classLibraryBuilder.appendClassLoader(getProjectClassLoader());
 
         JavaProjectBuilder builder = new JavaProjectBuilder(classLibraryBuilder);
         builder.setEncoding(encoding);
         for (File f : javaFiles) {
             if (!f.getAbsolutePath().toLowerCase(Locale.ENGLISH).endsWith(".java") && getLog().isWarnEnabled()) {
                 getLog().warn("'" + f + "' is not a Java file. Ignored it.");
                 continue;
             }
 
             try {
                 builder.addSource(f);
             } catch (ParseException e) {
                 if (getLog().isWarnEnabled()) {
                     getLog().warn("QDOX ParseException: " + e.getMessage() + ". Can't fix it.");
                 }
             }
         }
 
         return builder.getClasses();
     }
 
     /**
      * @return the classLoader for the given project using lazy instantiation.
      * @throws MojoExecutionException if any
      */
     private ClassLoader getProjectClassLoader() throws MojoExecutionException {
         if (projectClassLoader == null) {
             List<String> classPath;
             try {
                 classPath = getCompileClasspathElements(project);
             } catch (DependencyResolutionRequiredException e) {
                 throw new MojoExecutionException("DependencyResolutionRequiredException: " + e.getMessage(), e);
             }
 
             List<URL> urls = new ArrayList<>(classPath.size());
             for (String filename : classPath) {
                 try {
                     urls.add(new File(filename).toURI().toURL());
                 } catch (MalformedURLException e) {
                     throw new MojoExecutionException("MalformedURLException: " + e.getMessage(), e);
                 }
             }
 
             projectClassLoader = new URLClassLoader(urls.toArray(new URL[urls.size()]), null);
         }
 
         return projectClassLoader;
     }
 
     /**
      * Process the given {@link JavaClass}, ie add missing javadoc tags depending user parameters.
      *
      * @param javaClass not null
      * @throws IOException            if any
      * @throws MojoExecutionException if any
      */
     private void processFix(JavaClass javaClass) throws IOException, MojoExecutionException {
         // Skipping inner classes
         if (javaClass.isInner()) {
             return;
         }
 
         File javaFile;
         try {
             javaFile = Paths.get(javaClass.getSource().getURL().toURI()).toFile();
         } catch (URISyntaxException e) {
             throw new MojoExecutionException(e.getMessage());
         }
 
         // the original java content in memory
         final String originalContent = StringUtils.unifyLineSeparators(FileUtils.fileRead(javaFile, encoding));
 
         if (getLog().isDebugEnabled()) {
             getLog().debug("Analyzing " + javaClass.getFullyQualifiedName());
         }
 
         final StringWriter stringWriter = new StringWriter();
         boolean changeDetected = false;
         try (BufferedReader reader = new BufferedReader(new StringReader(originalContent))) {
 
             int lineNumber = 0;
             for (String line = reader.readLine(); line != null; line = reader.readLine()) {
                 lineNumber++;
                 final String indent = autodetectIndentation(line);
 
                 // fixing classes
                 if (javaClass.getComment() == null
                         && javaClass.getAnnotations() != null
                         && !javaClass.getAnnotations().isEmpty()) {
                     if (lineNumber == javaClass.getAnnotations().get(0).getLineNumber()) {
                         changeDetected |= fixClassComment(stringWriter, originalContent, javaClass, indent);
 
                         takeCareSingleComment(stringWriter, originalContent, javaClass);
                     }
                 } else if (lineNumber == javaClass.getLineNumber()) {
                     changeDetected |= fixClassComment(stringWriter, originalContent, javaClass, indent);
 
                     takeCareSingleComment(stringWriter, originalContent, javaClass);
                 }
 
                 // fixing fields
                 if (javaClass.getFields() != null) {
                     for (JavaField field : javaClass.getFields()) {
                         if (lineNumber == field.getLineNumber()) {
                             changeDetected |= fixFieldComment(stringWriter, javaClass, field, indent);
                         }
                     }
                 }
 
                 // fixing methods
                 if (javaClass.getConstructors() != null) {
                     for (JavaConstructor method : javaClass.getConstructors()) {
                         if (lineNumber == method.getLineNumber()) {
                             final boolean commentUpdated =
                                     fixMethodComment(stringWriter, originalContent, method, indent);
                             if (commentUpdated) {
                                 takeCareSingleComment(stringWriter, originalContent, method);
                             }
                             changeDetected |= commentUpdated;
                         }
                     }
                 }
 
                 // fixing methods
                 for (JavaMethod method : javaClass.getMethods()) {
                     int methodLineNumber;
                     if (method.getComment() == null && !method.getAnnotations().isEmpty()) {
                         methodLineNumber = method.getAnnotations().get(0).getLineNumber();
                     } else {
                         methodLineNumber = method.getLineNumber();
                     }
 
                     if (lineNumber == methodLineNumber) {
                         final boolean commentUpdated = fixMethodComment(stringWriter, originalContent, method, indent);
                         if (commentUpdated) {
                             takeCareSingleComment(stringWriter, originalContent, method);
                         }
                         changeDetected |= commentUpdated;
                     }
                 }
 
                 stringWriter.write(line);
                 stringWriter.write(EOL);
             }
         }
 
         if (changeDetected) {
             if (getLog().isInfoEnabled()) {
                 getLog().info("Saving changes to " + javaClass.getFullyQualifiedName());
             }
 
             if (outputDirectory != null
                     && !outputDirectory
                             .getAbsolutePath()
                             .equals(getProjectSourceDirectory().getAbsolutePath())) {
                 String path = StringUtils.replace(
                         javaFile.getAbsolutePath().replaceAll("\\\\", "/"),
                         project.getBuild().getSourceDirectory().replaceAll("\\\\", "/"),
                         "");
                 javaFile = new File(outputDirectory, path);
                 javaFile.getParentFile().mkdirs();
             }
             writeFile(javaFile, encoding, stringWriter.toString());
         } else {
             if (getLog().isDebugEnabled()) {
                 getLog().debug("No changes made to " + javaClass.getFullyQualifiedName());
             }
         }
     }
 
     /**
      * Take care of block or single comments between Javadoc comment and entity declaration ie:
      * <br/>
      * <code>
      * <font color="#808080">1</font>&nbsp;<font color="#ffffff">&nbsp;</font>
      * <font color="#3f5fbf">&#47;&#42;&#42;</font><br />
      * <font color="#808080">2</font>&nbsp;<font color="#ffffff">&nbsp;&nbsp;</font>
      * <font color="#3f5fbf">&#42;&nbsp;{Javadoc&nbsp;Comment}</font><br />
      * <font color="#808080">3</font>&nbsp;<font color="#ffffff">&nbsp;&nbsp;</font>
      * <font color="#3f5fbf">&#42;&#47;</font><br />
      * <font color="#808080">4</font>&nbsp;<font color="#ffffff">&nbsp;</font>
      * <font color="#3f7f5f">&#47;&#42;</font><br />
      * <font color="#808080">5</font>&nbsp;<font color="#ffffff">&nbsp;&nbsp;</font>
      * <font color="#3f7f5f">&#42;&nbsp;{Block&nbsp;Comment}</font><br />
      * <font color="#808080">6</font>&nbsp;<font color="#ffffff">&nbsp;&nbsp;</font>
      * <font color="#3f7f5f">&#42;&#47;</font><br />
      * <font color="#808080">7</font>&nbsp;<font color="#ffffff">&nbsp;</font>
      * <font color="#3f7f5f">&#47;&#47;&nbsp;{Single&nbsp;comment}</font><br />
      * <font color="#808080">8</font>&nbsp;<font color="#ffffff">&nbsp;</font>
      * <font color="#7f0055"><b>public&nbsp;</b></font><font color="#7f0055"><b>void&nbsp;</b></font>
      * <font color="#000000">dummyMethod</font><font color="#000000">(&nbsp;</font>
      * <font color="#000000">String&nbsp;s&nbsp;</font><font color="#000000">){}</font>
      * </code>
      *
      * @param stringWriter    not null
      * @param originalContent not null
      * @param entity          not null
      * @throws IOException if any
      * @see #extractOriginalJavadoc
      */
     private void takeCareSingleComment(
             final StringWriter stringWriter, final String originalContent, final JavaAnnotatedElement entity)
             throws IOException {
         if (entity.getComment() == null) {
             return;
         }
 
         String javadocComment = trimRight(extractOriginalJavadoc(originalContent, entity));
         String extraComment = javadocComment.substring(javadocComment.indexOf(END_JAVADOC) + END_JAVADOC.length());
         if (StringUtils.isNotEmpty(extraComment)) {
             if (extraComment.contains(EOL)) {
                 stringWriter.write(extraComment.substring(extraComment.indexOf(EOL) + EOL.length()));
             } else {
                 stringWriter.write(extraComment);
             }
             stringWriter.write(EOL);
         }
     }
 
     /**
      * Add/update Javadoc class comment.
      *
      * @param stringWriter
      * @param originalContent
      * @param javaClass
      * @param indent
      * @return {@code true} if the comment is updated, otherwise {@code false}
      * @throws MojoExecutionException
      * @throws IOException
      */
     private boolean fixClassComment(
             final StringWriter stringWriter,
             final String originalContent,
             final JavaClass javaClass,
             final String indent)
             throws MojoExecutionException, IOException {
         if (!fixClassComment) {
             return false;
         }
 
         if (!isInLevel(javaClass.getModifiers())) {
             return false;
         }
 
         // add
         if (javaClass.getComment() == null) {
             addDefaultClassComment(stringWriter, javaClass, indent);
             return true;
         }
 
         // update
         return updateEntityComment(stringWriter, originalContent, javaClass, indent);
     }
 
     /**
      * @param modifiers list of modifiers (public, private, protected, package)
      * @return <code>true</code> if modifier is align with <code>level</code>.
      */
     private boolean isInLevel(List<String> modifiers) {
         if (LEVEL_PUBLIC.equalsIgnoreCase(level.trim())) {
             return modifiers.contains(LEVEL_PUBLIC);
         }
 
         if (LEVEL_PROTECTED.equalsIgnoreCase(level.trim())) {
             return (modifiers.contains(LEVEL_PUBLIC) || modifiers.contains(LEVEL_PROTECTED));
         }
 
         if (LEVEL_PACKAGE.equalsIgnoreCase(level.trim())) {
             return !modifiers.contains(LEVEL_PRIVATE);
         }
 
         // should be private (shows all classes and members)
         return true;
     }
 
     /**
      * Add a default Javadoc for the given class, i.e.:
      * <br/>
      * <code>
      * <font color="#808080">1</font>&nbsp;<font color="#ffffff">&nbsp;</font>
      * <font color="#3f5fbf">&#47;&#42;&#42;</font><br />
      * <font color="#808080">2</font>&nbsp;<font color="#ffffff">&nbsp;&nbsp;</font>
      * <font color="#3f5fbf">&#42;&nbsp;{Comment&nbsp;based&nbsp;on&nbsp;the&nbsp;class&nbsp;name}</font><br />
      * <font color="#808080">3</font>&nbsp;<font color="#ffffff">&nbsp;&nbsp;</font>
      * <font color="#3f5fbf">&#42;</font><br />
      * <font color="#808080">4</font>&nbsp;<font color="#ffffff">&nbsp;&nbsp;</font>
      * <font color="#3f5fbf">&#42;&nbsp;</font><font color="#7f9fbf">@author&nbsp;</font>
      * <font color="#3f5fbf">X&nbsp;{added&nbsp;if&nbsp;addMissingAuthor}</font><br />
      * <font color="#808080">5</font>&nbsp;<font color="#ffffff">&nbsp;&nbsp;</font>
      * <font color="#3f5fbf">&#42;&nbsp;</font><font color="#7f9fbf">@version&nbsp;</font>
      * <font color="#3f5fbf">X&nbsp;{added&nbsp;if&nbsp;addMissingVersion}</font><br />
      * <font color="#808080">6</font>&nbsp;<font color="#ffffff">&nbsp;&nbsp;</font>
      * <font color="#3f5fbf">&#42;&nbsp;</font><font color="#7f9fbf">@since&nbsp;</font>
      * <font color="#3f5fbf">X&nbsp;{added&nbsp;if&nbsp;addMissingSince&nbsp;and&nbsp;new&nbsp;classes
      * from&nbsp;previous&nbsp;version}</font><br />
      * <font color="#808080">7</font>&nbsp;<font color="#ffffff">&nbsp;&nbsp;</font>
      * <font color="#3f5fbf">&#42;&#47;</font><br />
      * <font color="#808080">8</font>&nbsp;<font color="#7f0055"><b>public&nbsp;class&nbsp;</b></font>
      * <font color="#000000">DummyClass&nbsp;</font><font color="#000000">{}</font></code>
      * </code>
      *
      * @param stringWriter not null
      * @param javaClass    not null
      * @param indent       not null
      * @see #getDefaultClassJavadocComment(JavaClass)
      * @see #appendDefaultAuthorTag(StringBuilder, String)
      * @see #appendDefaultSinceTag(StringBuilder, String)
      * @see #appendDefaultVersionTag(StringBuilder, String)
      */
     private void addDefaultClassComment(
             final StringWriter stringWriter, final JavaClass javaClass, final String indent) {
         StringBuilder sb = new StringBuilder();
 
         sb.append(indent).append(START_JAVADOC);
         sb.append(EOL);
         sb.append(indent).append(SEPARATOR_JAVADOC);
         sb.append(getDefaultClassJavadocComment(javaClass));
         sb.append(EOL);
 
         appendSeparator(sb, indent);
 
         appendDefaultAuthorTag(sb, indent);
 
         appendDefaultVersionTag(sb, indent);
 
         if (fixTag(SINCE_TAG)) {
             if (!ignoreClirr) {
                 if (isNewClassFromLastVersion(javaClass)) {
                     appendDefaultSinceTag(sb, indent);
                 }
             } else {
                 appendDefaultSinceTag(sb, indent);
                 addSinceClasses(javaClass);
             }
         }
 
         sb.append(indent).append(" ").append(END_JAVADOC);
         sb.append(EOL);
 
         stringWriter.write(sb.toString());
     }
 
     /**
      * Add Javadoc field comment, only for static fields or interface fields.
      *
      * @param stringWriter not null
      * @param javaClass    not null
      * @param field        not null
      * @param indent       not null
      * @return {@code true} if comment was updated, otherwise {@code false}
      * @throws IOException if any
      */
     private boolean fixFieldComment(
             final StringWriter stringWriter, final JavaClass javaClass, final JavaField field, final String indent)
             throws IOException {
         if (!fixFieldComment) {
             return false;
         }
 
         if (!javaClass.isInterface() && (!isInLevel(field.getModifiers()) || !field.isStatic())) {
             return false;
         }
 
         // add
         if (field.getComment() == null) {
             addDefaultFieldComment(stringWriter, field, indent);
             return true;
         }
 
         // no update
         return false;
     }
 
     /**
      * Add a default Javadoc for the given field, i.e.:
      * <br/>
      * <code>
      * <font color="#808080">1</font>&nbsp;<font color="#ffffff">&nbsp;&nbsp;&nbsp;&nbsp;</font>
      * <font color="#3f5fbf">&#47;&#42;&#42;&nbsp;Constant&nbsp;</font><font color="#7f7f9f">&lt;code&gt;</font>
      * <font color="#3f5fbf">MY_STRING_CONSTANT=&#34;value&#34;</font>
      * <font color="#7f7f9f">&lt;/code&gt;&nbsp;</font><font color="#3f5fbf">&#42;&#47;</font><br />
      * <font color="#808080">2</font>&nbsp;<font color="#ffffff">&nbsp;&nbsp;&nbsp;&nbsp;</font>
      * <font color="#7f0055"><b>public&nbsp;static&nbsp;final&nbsp;</b></font>
      * <font color="#000000">String&nbsp;MY_STRING_CONSTANT&nbsp;=&nbsp;</font>
      * <font color="#2a00ff">&#34;value&#34;</font><font color="#000000">;</font>
      * </code>
      *
      * @param stringWriter not null
      * @param field        not null
      * @param indent       not null
      * @throws IOException if any
      */
     private void addDefaultFieldComment(final StringWriter stringWriter, final JavaField field, final String indent)
             throws IOException {
         StringBuilder sb = new StringBuilder();
 
         sb.append(indent).append(START_JAVADOC).append(" ");
         sb.append("Constant <code>").append(field.getName());
 
         if (StringUtils.isNotEmpty(field.getInitializationExpression())) {
             String qualifiedName = field.getType().getFullyQualifiedName();
 
             if (qualifiedName.equals(Byte.TYPE.toString())
                     || qualifiedName.equals(Short.TYPE.toString())
                     || qualifiedName.equals(Integer.TYPE.toString())
                     || qualifiedName.equals(Long.TYPE.toString())
                     || qualifiedName.equals(Float.TYPE.toString())
                     || qualifiedName.equals(Double.TYPE.toString())
                     || qualifiedName.equals(Boolean.TYPE.toString())
                     || qualifiedName.equals(Character.TYPE.toString())) {
                 sb.append("=");
                 sb.append(StringEscapeUtils.escapeHtml4(
                         field.getInitializationExpression().trim()));
             }
 
             if (qualifiedName.equals(String.class.getName())) {
                 StringBuilder value = new StringBuilder();
                 String[] lines = getLines(field.getInitializationExpression());
                 for (String line : lines) {
                     StringTokenizer token = new StringTokenizer(line.trim(), "\"\n\r");
                     while (token.hasMoreTokens()) {
                         String s = token.nextToken();
 
                         if (s.trim().equals("+")) {
                             continue;
                         }
                         if (s.trim().endsWith("\\")) {
                             s += "\"";
                         }
                         value.append(s);
                     }
                 }
 
                 sb.append("=\"");
                 String escapedValue = StringEscapeUtils.escapeHtml4(value.toString());
                 // reduce the size
                 // CHECKSTYLE_OFF: MagicNumber
                 if (escapedValue.length() < 40) {
                     sb.append(escapedValue).append("\"");
                 } else {
                     sb.append(escapedValue, 0, 39).append("\"{trunked}");
                 }
                 // CHECKSTYLE_ON: MagicNumber
             }
         }
 
         sb.append("</code> ").append(END_JAVADOC);
         sb.append(EOL);
 
         stringWriter.write(sb.toString());
     }
 
     /**
      * Add/update Javadoc method comment.
      *
      * @param stringWriter    not null
      * @param originalContent not null
      * @param javaExecutable      not null
      * @param indent          not null
      * @return {@code true} if comment was updated, otherwise {@code false}
      * @throws MojoExecutionException if any
      * @throws IOException            if any
      */
     private boolean fixMethodComment(
             final StringWriter stringWriter,
             final String originalContent,
             final JavaExecutable javaExecutable,
             final String indent)
             throws MojoExecutionException, IOException {
         if (!fixMethodComment) {
             return false;
         }
 
         if (!javaExecutable.getDeclaringClass().isInterface() && !isInLevel(javaExecutable.getModifiers())) {
             return false;
         }
 
         // add
         if (javaExecutable.getComment() == null) {
             addDefaultMethodComment(stringWriter, javaExecutable, indent);
             return true;
         }
 
         // update
         return updateEntityComment(stringWriter, originalContent, javaExecutable, indent);
     }
 
     /**
      * Add in the buffer a default Javadoc for the given class:
      * <br/>
      * <code>
      * <font color="#808080">1</font>&nbsp;<font color="#ffffff">&nbsp;</font>
      * <font color="#3f5fbf">&#47;&#42;&#42;</font><br />
      * <font color="#808080">2</font>&nbsp;<font color="#ffffff">&nbsp;&nbsp;</font>
      * <font color="#3f5fbf">&#42;&nbsp;{Comment&nbsp;based&nbsp;on&nbsp;the&nbsp;method&nbsp;name}</font><br />
      * <font color="#808080">3</font>&nbsp;<font color="#ffffff">&nbsp;&nbsp;</font>
      * <font color="#3f5fbf">&#42;</font><br />
      * <font color="#808080">4</font>&nbsp;<font color="#ffffff">&nbsp;&nbsp;</font>
      * <font color="#3f5fbf">&#42;&nbsp;</font><font color="#7f9fbf">@param&nbsp;</font>
      * <font color="#3f5fbf">X&nbsp;{added&nbsp;if&nbsp;addMissingParam}</font><br />
      * <font color="#808080">5</font>&nbsp;<font color="#ffffff">&nbsp;&nbsp;</font>
      * <font color="#3f5fbf">&#42;&nbsp;</font><font color="#7f9fbf">@return&nbsp;</font>
      * <font color="#3f5fbf">X&nbsp;{added&nbsp;if&nbsp;addMissingReturn}</font><br />
      * <font color="#808080">6</font>&nbsp;<font color="#ffffff">&nbsp;&nbsp;</font>
      * <font color="#3f5fbf">&#42;&nbsp;</font><font color="#7f9fbf">@throws&nbsp;</font>
      * <font color="#3f5fbf">X&nbsp;{added&nbsp;if&nbsp;addMissingThrows}</font><br />
      * <font color="#808080">7</font>&nbsp;<font color="#ffffff">&nbsp;&nbsp;</font>
      * <font color="#3f5fbf">&#42;&nbsp;</font><font color="#7f9fbf">@since&nbsp;</font>
      * <font color="#3f5fbf">X&nbsp;{added&nbsp;if&nbsp;addMissingSince&nbsp;and&nbsp;new&nbsp;classes
      * from&nbsp;previous&nbsp;version}</font><br />
      * <font color="#808080">8</font>&nbsp;<font color="#ffffff">&nbsp;&nbsp;</font>
      * <font color="#3f5fbf">&#42;&#47;</font><br />
      * <font color="#808080">9</font>&nbsp;<font color="#7f0055"><b>public&nbsp;</b></font>
      * <font color="#7f0055"><b>void&nbsp;</b></font><font color="#000000">dummyMethod</font>
      * <font color="#000000">(&nbsp;</font><font color="#000000">String&nbsp;s&nbsp;</font>
      * <font color="#000000">){}</font>
      * </code>
      *
      * @param stringWriter   not null
      * @param javaExecutable not null
      * @param indent         not null
      * @throws MojoExecutionException if any
      * @see #getDefaultMethodJavadocComment
      * @see #appendDefaultSinceTag(StringBuilder, String)
      */
     private void addDefaultMethodComment(
             final StringWriter stringWriter, final JavaExecutable javaExecutable, final String indent)
             throws MojoExecutionException {
         StringBuilder sb = new StringBuilder();
 
         // special case
         if (isInherited(javaExecutable)) {
             sb.append(indent).append(INHERITED_JAVADOC);
             sb.append(EOL);
 
             stringWriter.write(sb.toString());
             return;
         }
 
         sb.append(indent).append(START_JAVADOC);
         sb.append(EOL);
         sb.append(indent).append(SEPARATOR_JAVADOC);
         sb.append(getDefaultMethodJavadocComment(javaExecutable));
         sb.append(EOL);
 
         boolean separatorAdded = false;
         if (fixTag(PARAM_TAG)) {
             if (javaExecutable.getParameters() != null) {
                 for (JavaParameter javaParameter : javaExecutable.getParameters()) {
                     separatorAdded = appendDefaultParamTag(sb, indent, separatorAdded, javaParameter);
                 }
             }
             // is generic?
             if (javaExecutable.getTypeParameters() != null) {
                 for (JavaTypeVariable<JavaGenericDeclaration> typeParam : javaExecutable.getTypeParameters()) {
                     separatorAdded = appendDefaultParamTag(sb, indent, separatorAdded, typeParam);
                 }
             }
         }
         if (javaExecutable instanceof JavaMethod) {
             JavaMethod javaMethod = (JavaMethod) javaExecutable;
             if (fixTag(RETURN_TAG)
                     && javaMethod.getReturns() != null
                     && !javaMethod.getReturns().isVoid()) {
                 separatorAdded = appendDefaultReturnTag(sb, indent, separatorAdded, javaMethod);
             }
         }
         if (fixTag(THROWS_TAG) && javaExecutable.getExceptions() != null) {
             for (JavaType exception : javaExecutable.getExceptions()) {
                 separatorAdded = appendDefaultThrowsTag(sb, indent, separatorAdded, exception);
             }
         }
         if (fixTag(SINCE_TAG) && isNewMethodFromLastRevision(javaExecutable)) {
             separatorAdded = appendDefaultSinceTag(sb, indent, separatorAdded);
         }
 
         sb.append(indent).append(" ").append(END_JAVADOC);
         sb.append(EOL);
 
         stringWriter.write(sb.toString());
     }
 
     /**
      * @param stringWriter    not null
      * @param originalContent not null
      * @param entity          not null
      * @param indent          not null
      * @return the updated changeDetected flag
      * @throws MojoExecutionException if any
      * @throws IOException            if any
      */
     private boolean updateEntityComment(
             final StringWriter stringWriter,
             final String originalContent,
             final JavaAnnotatedElement entity,
             final String indent)
             throws MojoExecutionException, IOException {
         boolean changeDetected = false;
 
         String old = null;
         String s = stringWriter.toString();
         int i = s.lastIndexOf(START_JAVADOC);
         if (i != -1) {
             String tmp = s.substring(0, i);
             if (tmp.lastIndexOf(EOL) != -1) {
                 tmp = tmp.substring(0, tmp.lastIndexOf(EOL));
             }
 
             old = stringWriter.getBuffer().substring(i);
 
             stringWriter.getBuffer().delete(0, stringWriter.getBuffer().length());
             stringWriter.write(tmp);
             stringWriter.write(EOL);
         } else {
             changeDetected = true;
         }
 
         updateJavadocComment(stringWriter, originalContent, entity, indent);
 
         if (changeDetected) {
             return true; // return now if we already know there's a change
         }
 
         return !stringWriter.getBuffer().substring(i).equals(old);
     }
 
     /**
      * @param stringWriter    not null
      * @param originalContent not null
      * @param entity          not null
      * @param indent          not null
      * @throws MojoExecutionException if any
      * @throws IOException            if any
      */
     private void updateJavadocComment(
             final StringWriter stringWriter,
             final String originalContent,
             final JavaAnnotatedElement entity,
             final String indent)
             throws MojoExecutionException, IOException {
         if (entity.getComment() == null
                 && (entity.getTags() == null || entity.getTags().isEmpty())) {
             return;
         }
 
         boolean isJavaExecutable = entity instanceof JavaExecutable;
 
         StringBuilder sb = new StringBuilder();
 
         // special case for inherited method
         if (isJavaExecutable) {
             JavaExecutable javaMethod = (JavaExecutable) entity;
 
             if (isInherited(javaMethod)) {
                 // QDOX-154 could be empty
                 if (StringUtils.isEmpty(javaMethod.getComment())) {
                     sb.append(indent).append(INHERITED_JAVADOC);
                     sb.append(EOL);
                     stringWriter.write(sb.toString());
                     return;
                 }
 
                 String javadoc = getJavadocComment(originalContent, javaMethod);
 
                 // case: /** {@inheritDoc} */ or no tags
                 if (hasInheritedTag(javadoc)
                         && (javaMethod.getTags() == null || javaMethod.getTags().isEmpty())) {
                     sb.append(indent).append(INHERITED_JAVADOC);
                     sb.append(EOL);
                     stringWriter.write(sb.toString());
                     return;
                 }
 
                 if (javadoc.contains(START_JAVADOC)) {
                     javadoc = javadoc.substring(javadoc.indexOf(START_JAVADOC) + START_JAVADOC.length());
                 }
                 if (javadoc.contains(END_JAVADOC)) {
                     javadoc = javadoc.substring(0, javadoc.indexOf(END_JAVADOC));
                 }
 
                 sb.append(indent).append(START_JAVADOC);
                 sb.append(EOL);
                 if (!javadoc.contains(INHERITED_TAG)) {
                     sb.append(indent).append(SEPARATOR_JAVADOC).append(INHERITED_TAG);
                     sb.append(EOL);
                     appendSeparator(sb, indent);
                 }
                 javadoc = removeLastEmptyJavadocLines(javadoc);
                 javadoc = alignIndentationJavadocLines(javadoc, indent);
                 sb.append(javadoc);
                 sb.append(EOL);
                 if (javaMethod.getTags() != null) {
                     for (DocletTag docletTag : javaMethod.getTags()) {
                         // Voluntary ignore these tags
                         if (JavadocUtil.equals(docletTag.getName(), PARAM_TAG, RETURN_TAG, THROWS_TAG)) {
                             continue;
                         }
 
                         String s = getJavadocComment(originalContent, entity, docletTag);
                         s = removeLastEmptyJavadocLines(s);
                         s = alignIndentationJavadocLines(s, indent);
                         sb.append(s);
                         sb.append(EOL);
                     }
                 }
                 sb.append(indent).append(" ").append(END_JAVADOC);
                 sb.append(EOL);
 
                 if (hasInheritedTag(sb.toString().trim())) {
                     sb = new StringBuilder();
                     sb.append(indent).append(INHERITED_JAVADOC);
                     sb.append(EOL);
                     stringWriter.write(sb.toString());
                     return;
                 }
 
                 stringWriter.write(sb.toString());
                 return;
             }
         }
 
         sb.append(indent).append(START_JAVADOC);
         sb.append(EOL);
 
         // comment
         if (StringUtils.isNotEmpty(entity.getComment())) {
             updateJavadocComment(sb, originalContent, entity, indent);
         } else {
             addDefaultJavadocComment(sb, entity, indent, isJavaExecutable);
         }
 
         // tags
         updateJavadocTags(sb, originalContent, entity, indent, isJavaExecutable);
 
         sb = new StringBuilder(removeLastEmptyJavadocLines(sb.toString())).append(EOL);
 
         sb.append(indent).append(" ").append(END_JAVADOC);
         sb.append(EOL);
 
         stringWriter.write(sb.toString());
     }
 
     /**
      * @param sb              not null
      * @param originalContent not null
      * @param entity          not null
      * @param indent          not null
      * @throws IOException if any
      */
     private void updateJavadocComment(
             final StringBuilder sb,
             final String originalContent,
             final JavaAnnotatedElement entity,
             final String indent)
             throws IOException {
         String comment = getJavadocComment(originalContent, entity);
         comment = removeLastEmptyJavadocLines(comment);
         comment = alignIndentationJavadocLines(comment, indent);
 
         if (comment.contains(START_JAVADOC)) {
             comment = comment.substring(comment.indexOf(START_JAVADOC) + START_JAVADOC.length());
             comment = indent + SEPARATOR_JAVADOC + comment.trim();
         }
         if (comment.contains(END_JAVADOC)) {
             comment = comment.substring(0, comment.indexOf(END_JAVADOC));
         }
 
         if (fixTag(LINK_TAG)) {
             comment = replaceLinkTags(comment, entity);
         }
 
         String[] lines = getLines(comment);
         for (String line : lines) {
             sb.append(indent).append(" ").append(line.trim());
             sb.append(EOL);
         }
     }
 
     private static final Pattern REPLACE_LINK_TAGS_PATTERN = Pattern.compile("\\{@link\\s");
 
     static String replaceLinkTags(String comment, JavaAnnotatedElement entity) {
         StringBuilder resolvedComment = new StringBuilder();
         // scan comment for {@link someClassName} and try to resolve this
         Matcher linktagMatcher = REPLACE_LINK_TAGS_PATTERN.matcher(comment);
         int startIndex = 0;
         while (linktagMatcher.find()) {
             int startName = linktagMatcher.end();
             resolvedComment.append(comment, startIndex, startName);
             int endName = comment.indexOf("}", startName);
             if (endName >= 0) {
                 String name;
                 String link = comment.substring(startName, endName);
                 int hashIndex = link.indexOf('#');
                 if (hashIndex >= 0) {
                     name = link.substring(0, hashIndex);
                 } else {
                     name = link;
                 }
                 if (StringUtils.isNotBlank(name)) {
                     String typeName;
                     if (entity instanceof JavaClass) {
                         JavaClass clazz = (JavaClass) entity;
                         typeName = TypeResolver.byClassName(
                                         clazz.getBinaryName(),
                                         clazz.getJavaClassLibrary(),
                                         clazz.getSource().getImports())
                                 .resolveType(name.trim());
                     } else if (entity instanceof JavaMember) {
                         JavaClass clazz = ((JavaMember) entity).getDeclaringClass();
                         typeName = TypeResolver.byClassName(
                                         clazz.getBinaryName(),
                                         clazz.getJavaClassLibrary(),
                                         clazz.getSource().getImports())
                                 .resolveType(name.trim());
                     } else {
                         typeName = null;
                     }
 
                     if (typeName == null) {
                         typeName = name.trim();
                     } else {
                         typeName = typeName.replaceAll("\\$", ".");
                     }
                     // adjust name for inner classes
                     resolvedComment.append(typeName);
                 }
                 if (hashIndex >= 0) {
                     resolvedComment.append(link.substring(hashIndex).trim());
                 }
                 startIndex = endName;
             } else {
                 startIndex = startName;
             }
         }
         resolvedComment.append(comment.substring(startIndex));
         return resolvedComment.toString();
     }
 
     /**
      * @param sb           not null
      * @param entity       not null
      * @param indent       not null
      * @param isJavaExecutable
      */
     private void addDefaultJavadocComment(
             final StringBuilder sb,
             final JavaAnnotatedElement entity,
             final String indent,
             final boolean isJavaExecutable) {
         sb.append(indent).append(SEPARATOR_JAVADOC);
         if (isJavaExecutable) {
             sb.append(getDefaultMethodJavadocComment((JavaExecutable) entity));
         } else {
             sb.append(getDefaultClassJavadocComment((JavaClass) entity));
         }
         sb.append(EOL);
     }
 
     /**
      * @param sb              not null
      * @param originalContent not null
      * @param entity          not null
      * @param indent          not null
      * @param isJavaExecutable
      * @throws IOException            if any
      * @throws MojoExecutionException if any
      */
     private void updateJavadocTags(
             final StringBuilder sb,
             final String originalContent,
             final JavaAnnotatedElement entity,
             final String indent,
             final boolean isJavaExecutable)
             throws IOException, MojoExecutionException {
         appendSeparator(sb, indent);
 
         // parse tags
         JavaEntityTags javaEntityTags = parseJavadocTags(originalContent, entity, indent, isJavaExecutable);
 
         // update and write tags
         updateJavadocTags(sb, entity, isJavaExecutable, javaEntityTags);
 
         // add missing tags...
         addMissingJavadocTags(sb, entity, indent, isJavaExecutable, javaEntityTags);
     }
 
     /**
      * Parse entity tags
      *
      * @param originalContent not null
      * @param entity          not null
      * @param indent          not null
      * @param isJavaMethod
      * @return an instance of {@link JavaEntityTags}
      * @throws IOException if any
      */
     JavaEntityTags parseJavadocTags(
             final String originalContent,
             final JavaAnnotatedElement entity,
             final String indent,
             final boolean isJavaMethod)
             throws IOException {
         JavaEntityTags javaEntityTags = new JavaEntityTags(entity, isJavaMethod);
         for (DocletTag docletTag : entity.getTags()) {
             String originalJavadocTag = getJavadocComment(originalContent, entity, docletTag);
             originalJavadocTag = removeLastEmptyJavadocLines(originalJavadocTag);
             originalJavadocTag = alignIndentationJavadocLines(originalJavadocTag, indent);
 
             javaEntityTags.getNamesTags().add(docletTag.getName());
 
             if (isJavaMethod) {
                 List<String> params = docletTag.getParameters();
                 if (params.size() < 1) {
                     continue;
                 }
 
                 String paramName = params.get(0);
                 switch (docletTag.getName()) {
                     case PARAM_TAG:
                         javaEntityTags.putJavadocParamTag(paramName, docletTag.getValue(), originalJavadocTag);
                         break;
                     case RETURN_TAG:
                         javaEntityTags.setJavadocReturnTag(originalJavadocTag);
                         break;
                     case THROWS_TAG:
                         javaEntityTags.putJavadocThrowsTag(paramName, originalJavadocTag);
                         break;
                     default:
                         javaEntityTags.getUnknownTags().add(originalJavadocTag);
                         break;
                 }
             } else {
                 javaEntityTags.getUnknownTags().add(originalJavadocTag);
             }
         }
 
         return javaEntityTags;
     }
 
     /**
      * Write tags according javaEntityTags.
      *
      * @param sb             not null
      * @param entity         not null
      * @param isJavaExecutable
      * @param javaEntityTags not null
      */
     private void updateJavadocTags(
             final StringBuilder sb,
             final JavaAnnotatedElement entity,
             final boolean isJavaExecutable,
             final JavaEntityTags javaEntityTags) {
         for (DocletTag docletTag : entity.getTags()) {
             if (isJavaExecutable) {
                 JavaExecutable javaExecutable = (JavaExecutable) entity;
 
                 List<String> params = docletTag.getParameters();
                 if (params.size() < 1) {
                     continue;
                 }
 
                 if (docletTag.getName().equals(PARAM_TAG)) {
                     writeParamTag(sb, javaExecutable, javaEntityTags, params.get(0), docletTag.getValue());
                 } else if (docletTag.getName().equals(RETURN_TAG) && javaExecutable instanceof JavaMethod) {
                     writeReturnTag(sb, (JavaMethod) javaExecutable, javaEntityTags);
                 } else if (docletTag.getName().equals(THROWS_TAG)) {
                     writeThrowsTag(sb, javaExecutable, javaEntityTags, params);
                 } else {
                     // write unknown tags
                     for (Iterator<String> it = javaEntityTags.getUnknownTags().iterator(); it.hasNext(); ) {
                         String originalJavadocTag = it.next();
                         String simplified = StringUtils.removeDuplicateWhitespace(originalJavadocTag)
                                 .trim();
 
                         if (simplified.contains("@" + docletTag.getName())) {
                             it.remove();
                             sb.append(originalJavadocTag);
                             sb.append(EOL);
                         }
                     }
                 }
             } else {
                 for (Iterator<String> it = javaEntityTags.getUnknownTags().iterator(); it.hasNext(); ) {
                     String originalJavadocTag = it.next();
                     String simplified = StringUtils.removeDuplicateWhitespace(originalJavadocTag)
                             .trim();
 
                     if (simplified.contains("@" + docletTag.getName())) {
                         it.remove();
                         sb.append(originalJavadocTag);
                         sb.append(EOL);
                     }
                 }
             }
 
             if (sb.toString().endsWith(EOL)) {
                 sb.delete(sb.toString().lastIndexOf(EOL), sb.toString().length());
             }
 
             sb.append(EOL);
         }
     }
 
     private void writeParamTag(
             final StringBuilder sb,
             final JavaExecutable javaExecutable,
             final JavaEntityTags javaEntityTags,
             String paramName,
             String paramValue) {
         if (!fixTag(PARAM_TAG)) {
             // write original param tag if found
             String originalJavadocTag = javaEntityTags.getJavadocParamTag(paramValue);
             if (originalJavadocTag != null) {
                 sb.append(originalJavadocTag);
             }
             return;
         }
 
         boolean found = false;
         JavaParameter javaParam = javaExecutable.getParameterByName(paramName);
         if (javaParam == null) {
             // is generic?
             List<JavaTypeVariable<JavaGenericDeclaration>> typeParams = javaExecutable.getTypeParameters();
             for (JavaTypeVariable<JavaGenericDeclaration> typeParam : typeParams) {
                 if (("<" + typeParam.getName() + ">").equals(paramName)) {
                     found = true;
                 }
             }
         } else {
             found = true;
         }
 
         if (!found) {
             if (getLog().isWarnEnabled()) {
                 getLog().warn("Fixed unknown param '" + paramName + "' defined in "
                         + getJavaMethodAsString(javaExecutable));
             }
 
             if (sb.toString().endsWith(EOL)) {
                 sb.delete(sb.toString().lastIndexOf(EOL), sb.toString().length());
             }
         } else {
             String originalJavadocTag = javaEntityTags.getJavadocParamTag(paramValue);
             if (originalJavadocTag != null) {
                 sb.append(originalJavadocTag);
                 String s = "@" + PARAM_TAG + " " + paramName;
                 if (StringUtils.removeDuplicateWhitespace(originalJavadocTag)
                         .trim()
                         .endsWith(s)) {
                     sb.append(" ");
                     sb.append(getDefaultJavadocForType(javaParam.getJavaClass()));
                 }
             }
         }
     }
 
     private void writeReturnTag(
             final StringBuilder sb, final JavaMethod javaMethod, final JavaEntityTags javaEntityTags) {
         String originalJavadocTag = javaEntityTags.getJavadocReturnTag();
         if (originalJavadocTag == null) {
             return;
         }
 
         if (!fixTag(RETURN_TAG)) {
             // write original param tag if found
             sb.append(originalJavadocTag);
             return;
         }
 
         if (StringUtils.isNotEmpty(originalJavadocTag)
                 && javaMethod.getReturns() != null
                 && !javaMethod.getReturns().isVoid()) {
             sb.append(originalJavadocTag);
             if (originalJavadocTag.trim().endsWith("@" + RETURN_TAG)) {
                 sb.append(" ");
                 sb.append(getDefaultJavadocForType(javaMethod.getReturns()));
             }
         }
     }
 
     void writeThrowsTag(
             final StringBuilder sb,
             final JavaExecutable javaExecutable,
             final JavaEntityTags javaEntityTags,
             final List<String> params) {
         String exceptionClassName = params.get(0);
 
         String originalJavadocTag = javaEntityTags.getJavadocThrowsTag(exceptionClassName);
         if (originalJavadocTag == null) {
             return;
         }
 
         if (!fixTag(THROWS_TAG)) {
             // write original param tag if found
             sb.append(originalJavadocTag);
             return;
         }
 
         if (javaExecutable.getExceptions() != null) {
             for (JavaType exception : javaExecutable.getExceptions()) {
                 if (exception.getFullyQualifiedName().endsWith(exceptionClassName)) {
                     originalJavadocTag = StringUtils.replace(
                             originalJavadocTag, exceptionClassName, exception.getFullyQualifiedName());
                     if (StringUtils.removeDuplicateWhitespace(originalJavadocTag)
                             .trim()
                             .endsWith("@" + THROWS_TAG + " " + exception.getValue())) {
                         originalJavadocTag += " if any.";
                     }
 
                     sb.append(originalJavadocTag);
 
                     // added qualified name
                     javaEntityTags.putJavadocThrowsTag(exception.getValue(), originalJavadocTag);
 
                     return;
                 }
             }
         }
 
         Class<?> clazz = getClass(javaExecutable.getDeclaringClass(), exceptionClassName);
 
         if (clazz != null) {
             if (RuntimeException.class.isAssignableFrom(clazz)) {
                 sb.append(StringUtils.replace(originalJavadocTag, exceptionClassName, clazz.getName()));
 
                 // added qualified name
                 javaEntityTags.putJavadocThrowsTag(clazz.getName(), originalJavadocTag);
             } else if (Throwable.class.isAssignableFrom(clazz)) {
                 getLog().debug("Removing '" + originalJavadocTag + "'; Throwable not specified by "
                         + getJavaMethodAsString(javaExecutable) + " and it is not a RuntimeException.");
             } else {
                 getLog().debug("Removing '" + originalJavadocTag + "'; It is not a Throwable");
             }
         } else if (removeUnknownThrows) {
             getLog().warn("Ignoring unknown throws '" + exceptionClassName + "' defined on "
                     + getJavaMethodAsString(javaExecutable));
         } else {
             getLog().warn("Found unknown throws '" + exceptionClassName + "' defined on "
                     + getJavaMethodAsString(javaExecutable));
 
             sb.append(originalJavadocTag);
 
             if (params.size() == 1) {
                 sb.append(" if any.");
             }
 
             javaEntityTags.putJavadocThrowsTag(exceptionClassName, originalJavadocTag);
         }
     }
 
     /**
      * Add missing tags not already written.
      *
      * @param sb             not null
      * @param entity         not null
      * @param indent         not null
      * @param isJavaExecutable
      * @param javaEntityTags not null
      * @throws MojoExecutionException if any
      */
     private void addMissingJavadocTags(
             final StringBuilder sb,
             final JavaAnnotatedElement entity,
             final String indent,
             final boolean isJavaExecutable,
             final JavaEntityTags javaEntityTags)
             throws MojoExecutionException {
         if (isJavaExecutable) {
             JavaExecutable javaExecutable = (JavaExecutable) entity;
 
             if (fixTag(PARAM_TAG)) {
                 if (javaExecutable.getParameters() != null) {
                     for (JavaParameter javaParameter : javaExecutable.getParameters()) {
                         if (!javaEntityTags.hasJavadocParamTag(javaParameter.getName())) {
                             appendDefaultParamTag(sb, indent, javaParameter);
                         }
                     }
                 }
                 // is generic?
                 if (javaExecutable.getTypeParameters() != null) {
                     for (JavaTypeVariable<JavaGenericDeclaration> typeParam : javaExecutable.getTypeParameters()) {
                         if (!javaEntityTags.hasJavadocParamTag("<" + typeParam.getName() + ">")) {
                             appendDefaultParamTag(sb, indent, typeParam);
                         }
                     }
                 }
             }
 
             if (javaExecutable instanceof JavaMethod) {
                 JavaMethod javaMethod = (JavaMethod) javaExecutable;
                 if (fixTag(RETURN_TAG)
                         && StringUtils.isEmpty(javaEntityTags.getJavadocReturnTag())
                         && javaMethod.getReturns() != null
                         && !javaMethod.getReturns().isVoid()) {
                     appendDefaultReturnTag(sb, indent, javaMethod);
                 }
             }
 
             if (fixTag(THROWS_TAG) && javaExecutable.getExceptions() != null) {
                 for (JavaType exception : javaExecutable.getExceptions()) {
                     if (javaEntityTags.getJavadocThrowsTag(exception.getValue(), true) == null) {
                         appendDefaultThrowsTag(sb, indent, exception);
                     }
                 }
             }
         } else {
             if (!javaEntityTags.getNamesTags().contains(AUTHOR_TAG)) {
                 appendDefaultAuthorTag(sb, indent);
             }
             if (!javaEntityTags.getNamesTags().contains(VERSION_TAG)) {
                 appendDefaultVersionTag(sb, indent);
             }
         }
 
         if (fixTag(SINCE_TAG) && !javaEntityTags.getNamesTags().contains(SINCE_TAG)) {
             if (!isJavaExecutable) {
                 if (!ignoreClirr) {
                     if (isNewClassFromLastVersion((JavaClass) entity)) {
                         appendDefaultSinceTag(sb, indent);
                     }
                 } else {
                     appendDefaultSinceTag(sb, indent);
                     addSinceClasses((JavaClass) entity);
                 }
             } else {
                 if (!ignoreClirr) {
                     if (isNewMethodFromLastRevision((JavaExecutable) entity)) {
                         appendDefaultSinceTag(sb, indent);
                     }
                 } else if (sinceClasses != null) {
                     if (entity instanceof JavaMember
                             && !sinceClassesContains(((JavaMember) entity).getDeclaringClass())) {
                         appendDefaultSinceTag(sb, indent);
                     } else if (entity instanceof JavaClass
                             && !sinceClassesContains(((JavaClass) entity).getDeclaringClass())) {
                         appendDefaultSinceTag(sb, indent);
                     }
                 }
             }
         }
     }
 
     /**
      * @param sb             not null
      * @param indent         not null
      * @param separatorAdded
      * @return true if separator has been added.
      */
     private boolean appendDefaultAuthorTag(final StringBuilder sb, final String indent, boolean separatorAdded) {
         if (!fixTag(AUTHOR_TAG)) {
             return separatorAdded;
         }
 
         if (!separatorAdded) {
             appendSeparator(sb, indent);
             separatorAdded = true;
         }
 
         appendDefaultAuthorTag(sb, indent);
         return separatorAdded;
     }
 
     /**
      * @param sb     not null
      * @param indent not null
      */
     private void appendDefaultAuthorTag(final StringBuilder sb, final String indent) {
         if (!fixTag(AUTHOR_TAG)) {
             return;
         }
 
         sb.append(indent).append(" * @").append(AUTHOR_TAG).append(" ");
         sb.append(defaultAuthor);
         sb.append(EOL);
     }
 
     /**
      * @param sb             not null
      * @param indent         not null
      * @param separatorAdded
      * @return true if separator has been added.
      */
     private boolean appendDefaultSinceTag(final StringBuilder sb, final String indent, boolean separatorAdded) {
         if (!fixTag(SINCE_TAG)) {
             return separatorAdded;
         }
 
         if (!separatorAdded) {
             appendSeparator(sb, indent);
             separatorAdded = true;
         }
 
         appendDefaultSinceTag(sb, indent);
         return separatorAdded;
     }
 
     /**
      * @param sb     not null
      * @param indent not null
      */
     private void appendDefaultSinceTag(final StringBuilder sb, final String indent) {
         if (!fixTag(SINCE_TAG)) {
             return;
         }
 
         sb.append(indent).append(" * @").append(SINCE_TAG).append(" ");
         sb.append(defaultSince);
         sb.append(EOL);
     }
 
     /**
      * @param sb             not null
      * @param indent         not null
      * @param separatorAdded
      * @return true if separator has been added.
      */
     private boolean appendDefaultVersionTag(final StringBuilder sb, final String indent, boolean separatorAdded) {
         if (!fixTag(VERSION_TAG)) {
             return separatorAdded;
         }
 
         if (!separatorAdded) {
             appendSeparator(sb, indent);
             separatorAdded = true;
         }
 
         appendDefaultVersionTag(sb, indent);
         return separatorAdded;
     }
 
     /**
      * @param sb     not null
      * @param indent not null
      */
     private void appendDefaultVersionTag(final StringBuilder sb, final String indent) {
         if (!fixTag(VERSION_TAG)) {
             return;
         }
 
         sb.append(indent).append(" * @").append(VERSION_TAG).append(" ");
         sb.append(defaultVersion);
         sb.append(EOL);
     }
 
     /**
      * @param sb             not null
      * @param indent         not null
      * @param separatorAdded
      * @param typeParam  not null
      * @return true if separator has been added.
      */
     private boolean appendDefaultParamTag(
             final StringBuilder sb, final String indent, boolean separatorAdded, final JavaParameter typeParam) {
         if (!fixTag(PARAM_TAG)) {
             return separatorAdded;
         }
 
         if (!separatorAdded) {
             appendSeparator(sb, indent);
             separatorAdded = true;
         }
 
         appendDefaultParamTag(sb, indent, typeParam);
         return separatorAdded;
     }
 
     /**
      * @param sb             not null
      * @param indent         not null
      * @param separatorAdded
      * @param typeParameter  not null
      * @return true if separator has been added.
      */
     private boolean appendDefaultParamTag(
             final StringBuilder sb,
             final String indent,
             boolean separatorAdded,
             final JavaTypeVariable<JavaGenericDeclaration> typeParameter) {
         if (!fixTag(PARAM_TAG)) {
             return separatorAdded;
         }
 
         if (!separatorAdded) {
             appendSeparator(sb, indent);
             separatorAdded = true;
         }
 
         appendDefaultParamTag(sb, indent, typeParameter);
         return separatorAdded;
     }
 
     /**
      * @param sb            not null
      * @param indent        not null
      * @param typeParam not null
      */
     private void appendDefaultParamTag(final StringBuilder sb, final String indent, final JavaParameter typeParam) {
         if (!fixTag(PARAM_TAG)) {
             return;
         }
 
         sb.append(indent).append(" * @").append(PARAM_TAG).append(" ");
         sb.append(typeParam.getName());
         sb.append(" ");
         sb.append(getDefaultJavadocForType(typeParam.getJavaClass()));
         sb.append(EOL);
     }
 
     /**
      * @param sb            not null
      * @param indent        not null
      * @param typeParameter not null
      */
     private void appendDefaultParamTag(
             final StringBuilder sb, final String indent, final JavaTypeVariable<JavaGenericDeclaration> typeParameter) {
         if (!fixTag(PARAM_TAG)) {
             return;
         }
 
         sb.append(indent).append(" * @").append(PARAM_TAG).append(" ");
         sb.append("<").append(typeParameter.getName()).append(">");
         sb.append(" ");
         sb.append(getDefaultJavadocForType(typeParameter));
         sb.append(EOL);
     }
 
     /**
      * @param sb             not null
      * @param indent         not null
      * @param separatorAdded
      * @param javaMethod     not null
      * @return true if separator has been added.
      */
     private boolean appendDefaultReturnTag(
             final StringBuilder sb, final String indent, boolean separatorAdded, final JavaMethod javaMethod) {
         if (!fixTag(RETURN_TAG)) {
             return separatorAdded;
         }
 
         if (!separatorAdded) {
             appendSeparator(sb, indent);
             separatorAdded = true;
         }
 
         appendDefaultReturnTag(sb, indent, javaMethod);
         return separatorAdded;
     }
 
     /**
      * @param sb         not null
      * @param indent     not null
      * @param javaMethod not null
      */
     private void appendDefaultReturnTag(final StringBuilder sb, final String indent, final JavaMethod javaMethod) {
         if (!fixTag(RETURN_TAG)) {
             return;
         }
 
         sb.append(indent).append(" * @").append(RETURN_TAG).append(" ");
         sb.append(getDefaultJavadocForType(javaMethod.getReturns()));
         sb.append(EOL);
     }
 
     /**
      * @param sb             not null
      * @param indent         not null
      * @param separatorAdded
      * @param exception      not null
      * @return true if separator has been added.
      */
     private boolean appendDefaultThrowsTag(
             final StringBuilder sb, final String indent, boolean separatorAdded, final JavaType exception) {
         if (!fixTag(THROWS_TAG)) {
             return separatorAdded;
         }
 
         if (!separatorAdded) {
             appendSeparator(sb, indent);
             separatorAdded = true;
         }
 
         appendDefaultThrowsTag(sb, indent, exception);
         return separatorAdded;
     }
 
     /**
      * @param sb        not null
      * @param indent    not null
      * @param exception not null
      */
     private void appendDefaultThrowsTag(final StringBuilder sb, final String indent, final JavaType exception) {
         if (!fixTag(THROWS_TAG)) {
             return;
         }
 
         sb.append(indent).append(" * @").append(THROWS_TAG).append(" ");
         sb.append(exception.getFullyQualifiedName());
         sb.append(" if any.");
         sb.append(EOL);
     }
 
     /**
      * @param sb     not null
      * @param indent not null
      */
     private void appendSeparator(final StringBuilder sb, final String indent) {
         sb.append(indent).append(" *");
         sb.append(EOL);
     }
 
     /**
      * Verify if a method has <code>&#64;java.lang.Override()</code> annotation or if it is an inherited method
      * from an interface or a super class. The goal is to handle <code>&#123;&#64;inheritDoc&#125;</code> tag.
      *
      * @param javaMethod not null
      * @return <code>true</code> if the method is inherited, <code>false</code> otherwise.
      * @throws MojoExecutionException if any
      */
     private boolean isInherited(JavaExecutable javaMethod) throws MojoExecutionException {
         if (javaMethod.getAnnotations() != null) {
             for (JavaAnnotation annotation : javaMethod.getAnnotations()) {
                 if (annotation.toString().equals("@java.lang.Override()")) {
                     return true;
                 }
             }
         }
 
         Class<?> clazz = getClass(javaMethod.getDeclaringClass().getFullyQualifiedName());
 
         List<Class<?>> interfaces = ClassUtils.getAllInterfaces(clazz);
         for (Class<?> intface : interfaces) {
             if (isInherited(intface, javaMethod)) {
                 return true;
             }
         }
 
         List<Class<?>> classes = ClassUtils.getAllSuperclasses(clazz);
         for (Class<?> superClass : classes) {
             if (isInherited(superClass, javaMethod)) {
                 return true;
             }
         }
 
         return false;
     }
 
     /**
      * @param clazz      the Java class object, not null
      * @param javaMethod the QDox JavaMethod object not null
      * @return <code>true</code> if <code>javaMethod</code> exists in the given <code>clazz</code>,
      *         <code>false</code> otherwise.
      * @see #isInherited(JavaExecutable)
      */
     private boolean isInherited(Class<?> clazz, JavaExecutable javaMethod) {
         for (Method method : clazz.getDeclaredMethods()) {
             if (!method.getName().equals(javaMethod.getName())) {
                 continue;
             }
 
             if (method.getParameterTypes().length != javaMethod.getParameters().size()) {
                 continue;
             }
 
             boolean found = false;
             int j = 0;
             for (Class<?> paramType : method.getParameterTypes()) {
                 String name1 = paramType.getName();
                 String name2 = javaMethod.getParameters().get(j++).getType().getFullyQualifiedName();
                 found = name1.equals(name2); // TODO check algo, seems broken (only takes in account the last param)
             }
 
             return found;
         }
 
         return false;
     }
 
     /**
      * @param clazz
      * @return
      */
     private String getDefaultJavadocForType(JavaClass clazz) {
         StringBuilder sb = new StringBuilder();
 
         if (!JavaTypeVariable.class.isAssignableFrom(clazz.getClass()) && clazz.isPrimitive()) {
             if (clazz.isArray()) {
                 sb.append("an array of ").append(clazz.getComponentType().getCanonicalName());
             } else {
                 sb.append("a ").append(clazz.getCanonicalName());
             }
             return sb.toString();
         }
 
         StringBuilder javadocLink = new StringBuilder();
         try {
             getClass(clazz.getCanonicalName());
 
             javadocLink.append("{@link ");
 
             if (clazz.isArray()) {
                 javadocLink.append(clazz.getComponentType().getCanonicalName());
             } else {
                 javadocLink.append(clazz.getCanonicalName());
             }
             javadocLink.append("}");
         } catch (Exception e) {
             javadocLink.append(clazz.getValue());
         }
 
         if (clazz.isArray()) {
             sb.append("an array of ").append(javadocLink).append(" objects");
         } else {
             sb.append("a ").append(javadocLink).append(" object");
         }
 
         return sb.toString();
     }
 
     private String getDefaultJavadocForType(JavaTypeVariable<JavaGenericDeclaration> typeParameter) {
         return "a " + typeParameter.getName() + " class";
     }
 
     /**
      * Check under Clirr if this given class is newer from the last version.
      *
      * @param javaClass a given class not null
      * @return <code>true</code> if Clirr said that this class is added from the last version,
      *         <code>false</code> otherwise or if {@link #clirrNewClasses} is null.
      */
     private boolean isNewClassFromLastVersion(JavaClass javaClass) {
         return (clirrNewClasses != null) && clirrNewClasses.contains(javaClass.getFullyQualifiedName());
     }
 
     /**
      * Check under Clirr if this given method is newer from the last version.
      *
      * @param javaExecutable a given method not null
      * @return <code>true</code> if Clirr said that this method is added from the last version,
      *         <code>false</code> otherwise or if {@link #clirrNewMethods} is null.
      * @throws MojoExecutionException if any
      */
     private boolean isNewMethodFromLastRevision(JavaExecutable javaExecutable) throws MojoExecutionException {
         if (clirrNewMethods == null) {
             return false;
         }
 
         List<String> clirrMethods =
                 clirrNewMethods.get(javaExecutable.getDeclaringClass().getFullyQualifiedName());
         if (clirrMethods == null) {
             return false;
         }
 
         for (String clirrMethod : clirrMethods) {
             // see net.sf.clirr.core.internal.checks.MethodSetCheck#getMethodId(JavaType clazz, Method method)
             String retrn = "";
             if (javaExecutable instanceof JavaMethod && ((JavaMethod) javaExecutable).getReturns() != null) {
                 retrn = ((JavaMethod) javaExecutable).getReturns().getFullyQualifiedName();
             }
             StringBuilder params = new StringBuilder();
             for (JavaParameter parameter : javaExecutable.getParameters()) {
                 if (params.length() > 0) {
                     params.append(", ");
                 }
                 params.append(parameter.getResolvedFullyQualifiedName());
             }
             if (clirrMethod.contains(retrn + " ")
                     && clirrMethod.contains(javaExecutable.getName() + "(")
                     && clirrMethod.contains("(" + params.toString() + ")")) {
                 return true;
             }
         }
 
         return false;
     }
 
     /**
      * @param className not null
      * @return the Class corresponding to the given class name using the project classloader.
      * @throws MojoExecutionException if class not found
      * @see ClassUtils#getClass(ClassLoader, String, boolean)
      * @see #getProjectClassLoader()
      */
     private Class<?> getClass(String className) throws MojoExecutionException {
         try {
             return ClassUtils.getClass(getProjectClassLoader(), className, false);
         } catch (ClassNotFoundException e) {
             throw new MojoExecutionException("ClassNotFoundException: " + e.getMessage(), e);
         }
     }
 
     /**
      * Returns the Class object assignable for {@link RuntimeException} class and associated with the given
      * exception class name.
      *
      * @param currentClass       not null
      * @param exceptionClassName not null, an exception class name defined as:
      *                           <ul>
      *                           <li>exception class fully qualified</li>
      *                           <li>exception class in the same package</li>
      *                           <li>exception inner class</li>
      *                           <li>exception class in java.lang package</li>
      *                           </ul>
      * @return the class if found, otherwise {@code null}.
      * @see #getClass(String)
      */
     private Class<?> getClass(JavaClass currentClass, String exceptionClassName) {
         String[] potentialClassNames = new String[] {
             exceptionClassName,
             currentClass.getPackage().getName() + "." + exceptionClassName,
             currentClass.getPackage().getName() + "." + currentClass.getName() + "$" + exceptionClassName,
             "java.lang." + exceptionClassName
         };
 
         Class<?> clazz = null;
         for (String potentialClassName : potentialClassNames) {
             try {
                 clazz = getClass(potentialClassName);
             } catch (MojoExecutionException e) {
                 // nop
             }
             if (clazz != null) {
                 return clazz;
             }
         }
 
         return null;
     }
 
     /**
      * @param javaClass not null
      */
     private void addSinceClasses(JavaClass javaClass) {
         if (sinceClasses == null) {
             sinceClasses = new ArrayList<>();
         }
         sinceClasses.add(javaClass.getFullyQualifiedName());
     }
 
     private boolean sinceClassesContains(JavaClass javaClass) {
         return sinceClasses.contains(javaClass.getFullyQualifiedName());
     }
 
     // ----------------------------------------------------------------------
     // Static methods
     // ----------------------------------------------------------------------
 
     /**
      * Write content into the given javaFile and using the given encoding.
      * All line separators will be unified.
      *
      * @param javaFile not null
      * @param encoding not null
      * @param content  not null
      * @throws IOException if any
      */
     private static void writeFile(final File javaFile, final String encoding, final String content) throws IOException {
         String unified = StringUtils.unifyLineSeparators(content);
         FileUtils.fileWrite(javaFile, encoding, unified);
     }
 
     /**
      * @return the full clirr goal, i.e. <code>groupId:artifactId:version:goal</code>. The clirr-plugin version
      *         could be load from the pom.properties in the clirr-maven-plugin dependency.
      */
     private static String getFullClirrGoal() {
         StringBuilder sb = new StringBuilder();
 
         sb.append(CLIRR_MAVEN_PLUGIN_GROUPID)
                 .append(":")
                 .append(CLIRR_MAVEN_PLUGIN_ARTIFACTID)
                 .append(":");
 
         String clirrVersion = CLIRR_MAVEN_PLUGIN_VERSION;
 
         String resource = "META-INF/maven/" + CLIRR_MAVEN_PLUGIN_GROUPID + "/" + CLIRR_MAVEN_PLUGIN_ARTIFACTID
                 + "/pom.properties";
 
         try (InputStream resourceAsStream =
                 AbstractFixJavadocMojo.class.getClassLoader().getResourceAsStream(resource)) {
 
             if (resourceAsStream != null) {
                 Properties properties = new Properties();
                 properties.load(resourceAsStream);
                 if (StringUtils.isNotEmpty(properties.getProperty("version"))) {
                     clirrVersion = properties.getProperty("version");
                 }
             }
         } catch (IOException e) {
             // nop
         }
 
         sb.append(clirrVersion).append(":").append(CLIRR_MAVEN_PLUGIN_GOAL);
 
         return sb.toString();
     }
 
     /**
      * Default comment for class.
      *
      * @param javaClass not null
      * @return a default comment for class.
      */
     private static String getDefaultClassJavadocComment(final JavaClass javaClass) {
         StringBuilder sb = new StringBuilder();
 
         sb.append("<p>");
         if (javaClass.isAbstract()) {
             sb.append("Abstract ");
         }
 
         sb.append(javaClass.getName());
 
         if (!javaClass.isInterface()) {
             sb.append(" class.");
         } else {
             sb.append(" interface.");
         }
 
         sb.append("</p>");
 
         return sb.toString();
     }
 
     /**
      * Default comment for method with taking care of getter/setter in the javaMethod name.
      *
      * @param javaExecutable not null
      * @return a default comment for method
      */
     private static String getDefaultMethodJavadocComment(final JavaExecutable javaExecutable) {
         if (javaExecutable instanceof JavaConstructor) {
             return "<p>Constructor for " + javaExecutable.getName() + ".</p>";
         }
 
         if (javaExecutable.getName().length() > 3
                 && (javaExecutable.getName().startsWith("get")
                         || javaExecutable.getName().startsWith("set"))) {
             String field =
                     StringUtils.lowercaseFirstLetter(javaExecutable.getName().substring(3));
 
             JavaClass clazz = javaExecutable.getDeclaringClass();
 
             if (clazz.getFieldByName(field) == null) {
                 return "<p>" + javaExecutable.getName() + ".</p>";
             }
 
             StringBuilder sb = new StringBuilder();
 
             sb.append("<p>");
             if (javaExecutable.getName().startsWith("get")) {
                 sb.append("Getter ");
             } else if (javaExecutable.getName().startsWith("set")) {
                 sb.append("Setter ");
             }
             sb.append("for the field <code>").append(field).append("</code>.</p>");
 
             return sb.toString();
         }
 
         return "<p>" + javaExecutable.getName() + ".</p>";
     }
 
     /**
      * Try to find if a Javadoc comment has an {@link #INHERITED_TAG} for instance:
      * <pre>
      * &#47;&#42;&#42; {&#64;inheritDoc} &#42;&#47;
      * </pre>
      * or
      * <pre>
      * &#47;&#42;&#42;
      * &#32;&#42; {&#64;inheritDoc}
      * &#32;&#42;&#47;
      * </pre>
      *
      * @param content not null
      * @return <code>true</code> if the content has an inherited tag, <code>false</code> otherwise.
      */
     private static boolean hasInheritedTag(final String content) {
         final String inheritedTagPattern =
                 "^\\s*(\\/\\*\\*)?(\\s*(\\*)?)*(\\{)@inheritDoc\\s*(\\})(\\s*(\\*)?)*(\\*\\/)?$";
         return Pattern.matches(inheritedTagPattern, StringUtils.removeDuplicateWhitespace(content));
     }
 
     /**
      * Workaround for QDOX-146 about whitespace.
      * Ideally we want to use <code>entity.getComment()</code>
      * <br/>
      * For instance, with the following snippet:
      * <br/>
      * <p/>
      * <code>
      * <font color="#808080">1</font>&nbsp;<font color="#ffffff"></font><br />
      * <font color="#808080">2</font>&nbsp;<font color="#ffffff">&nbsp;&nbsp;&nbsp;&nbsp;</font>
      * <font color="#3f5fbf">&#47;&#42;&#42;</font><br />
      * <font color="#808080">3</font>&nbsp;<font color="#ffffff">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</font>
      * <font color="#3f5fbf">&#42;&nbsp;Dummy&nbsp;Javadoc&nbsp;comment.</font><br />
      * <font color="#808080">4</font>&nbsp;<font color="#ffffff">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</font>
      * <font color="#3f5fbf">&#42;&nbsp;</font><font color="#7f9fbf">@param&nbsp;</font>
      * <font color="#3f5fbf">s&nbsp;a&nbsp;String</font><br />
      * <font color="#808080">5</font>&nbsp;<font color="#ffffff">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</font>
      * <font color="#3f5fbf">&#42;&#47;</font><br />
      * <font color="#808080">6</font>&nbsp;<font color="#ffffff">&nbsp;&nbsp;&nbsp;&nbsp;</font>
      * <font color="#7f0055"><b>public&nbsp;</b></font><font color="#7f0055"><b>void&nbsp;</b></font>
      * <font color="#000000">dummyMethod</font><font color="#000000">(&nbsp;</font>
      * <font color="#000000">String&nbsp;s&nbsp;</font><font color="#000000">){}</font><br />
      * </code>
      * <p/>
      * <br/>
      * The return will be:
      * <br/>
      * <p/>
      * <code>
      * <font color="#808080">1</font>&nbsp;<font color="#ffffff">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</font>
      * <font color="#3f5fbf">&#42;&nbsp;Dummy&nbsp;Javadoc&nbsp;comment.</font><br />
      * </code>
      *
      * @param javaClassContent original class content not null
      * @param entity           not null
      * @return the javadoc comment for the entity without any tags.
      * @throws IOException if any
      */
     static String getJavadocComment(final String javaClassContent, final JavaAnnotatedElement entity)
             throws IOException {
         if (entity.getComment() == null) {
             return "";
         }
 
         String originalJavadoc = extractOriginalJavadocContent(javaClassContent, entity);
 
         StringBuilder sb = new StringBuilder();
         BufferedReader lr = new BufferedReader(new StringReader(originalJavadoc));
         String line;
         while ((line = lr.readLine()) != null) {
             String l = StringUtils.removeDuplicateWhitespace(line.trim());
             if (l.startsWith("* @") || l.startsWith("*@")) {
                 break;
             }
             sb.append(line).append(EOL);
         }
 
         return trimRight(sb.toString());
     }
 
     /**
      * Work around for QDOX-146 about whitespace.
      * Ideally we want to use <code>docletTag.getValue()</code>
      * <br/>
      * For instance, with the following snippet:
      * <br/>
      * <p/>
      * <code>
      * <font color="#808080">1</font>&nbsp;<font color="#ffffff"></font><br />
      * <font color="#808080">2</font>&nbsp;<font color="#ffffff">&nbsp;&nbsp;&nbsp;&nbsp;</font>
      * <font color="#3f5fbf">&#47;&#42;&#42;</font><br />
      * <font color="#808080">3</font>&nbsp;<font color="#ffffff">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</font>
      * <font color="#3f5fbf">&#42;&nbsp;Dummy&nbsp;Javadoc&nbsp;comment.</font><br />
      * <font color="#808080">4</font>&nbsp;<font color="#ffffff">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</font>
      * <font color="#3f5fbf">&#42;&nbsp;</font><font color="#7f9fbf">@param&nbsp;</font>
      * <font color="#3f5fbf">s&nbsp;a&nbsp;String</font><br />
      * <font color="#808080">5</font>&nbsp;<font color="#ffffff">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</font>
      * <font color="#3f5fbf">&#42;&#47;</font><br />
      * <font color="#808080">6</font>&nbsp;<font color="#ffffff">&nbsp;&nbsp;&nbsp;&nbsp;</font>
      * <font color="#7f0055"><b>public&nbsp;</b></font><font color="#7f0055"><b>void&nbsp;</b></font>
      * <font color="#000000">dummyMethod</font><font color="#000000">(&nbsp;</font>
      * <font color="#000000">String&nbsp;s&nbsp;</font><font color="#000000">){}</font><br />
      * </code>
      * <p/>
      * <br/>
      * The return will be:
      * <br/>
      * <p/>
      * <code>
      * <font color="#808080">1</font>&nbsp;<font color="#ffffff">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</font>
      * <font color="#3f5fbf">&#42;&nbsp;</font><font color="#7f9fbf">@param&nbsp;</font>
      * <font color="#3f5fbf">s&nbsp;a&nbsp;String</font><br />
      * </code>
      *
      * @param javaClassContent original class content not null
      * @param entity           not null
      * @param docletTag        not null
      * @return the javadoc comment for the entity without Javadoc tags.
      * @throws IOException if any
      */
     String getJavadocComment(
             final String javaClassContent, final JavaAnnotatedElement entity, final DocletTag docletTag)
             throws IOException {
         if (docletTag.getValue() == null || docletTag.getParameters().isEmpty()) {
             return "";
         }
 
         String originalJavadoc = extractOriginalJavadocContent(javaClassContent, entity);
 
         StringBuilder sb = new StringBuilder();
         BufferedReader lr = new BufferedReader(new StringReader(originalJavadoc));
         String line;
         boolean found = false;
 
         // matching first line of doclettag
         Pattern p = Pattern.compile("(\\s*\\*\\s?@" + docletTag.getName() + ")\\s+" + "(\\Q"
                 + docletTag.getValue().split("\r\n|\r|\n")[0] + "\\E)");
 
         while ((line = lr.readLine()) != null) {
             Matcher m = p.matcher(line);
             if (m.matches()) {
                 if (fixTag(LINK_TAG)) {
                     line = replaceLinkTags(line, entity);
                 }
                 sb.append(line).append(EOL);
                 found = true;
             } else {
                 if (line.trim().startsWith("* @") || line.trim().startsWith("*@")) {
                     found = false;
                 }
                 if (found) {
                     if (fixTag(LINK_TAG)) {
                         line = replaceLinkTags(line, entity);
                     }
                     sb.append(line).append(EOL);
                 }
             }
         }
 
         return trimRight(sb.toString());
     }
 
     /**
      * Extract the original Javadoc and others comments up to {@link #START_JAVADOC} form the entity. This method
      * takes care of the Javadoc indentation. All javadoc lines will be trimmed on right.
      * <br/>
      * For instance, with the following snippet:
      * <br/>
      * <p/>
      * <code>
      * <font color="#808080">1</font>&nbsp;<font color="#ffffff"></font><br />
      * <font color="#808080">2</font>&nbsp;<font color="#ffffff">&nbsp;&nbsp;&nbsp;&nbsp;</font>
      * <font color="#3f5fbf">&#47;&#42;&#42;</font><br />
      * <font color="#808080">3</font>&nbsp;<font color="#ffffff">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</font>
      * <font color="#3f5fbf">&#42;&nbsp;Dummy&nbsp;Javadoc&nbsp;comment.</font><br />
      * <font color="#808080">4</font>&nbsp;<font color="#ffffff">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</font>
      * <font color="#3f5fbf">&#42;&nbsp;</font><font color="#7f9fbf">@param&nbsp;</font>
      * <font color="#3f5fbf">s&nbsp;a&nbsp;String</font><br />
      * <font color="#808080">5</font>&nbsp;<font color="#ffffff">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</font>
      * <font color="#3f5fbf">&#42;&#47;</font><br />
      * <font color="#808080">6</font>&nbsp;<font color="#ffffff">&nbsp;&nbsp;&nbsp;&nbsp;</font>
      * <font color="#7f0055"><b>public&nbsp;</b></font><font color="#7f0055"><b>void&nbsp;</b></font>
      * <font color="#000000">dummyMethod</font><font color="#000000">(&nbsp;</font>
      * <font color="#000000">String&nbsp;s&nbsp;</font><font color="#000000">){}</font><br />
      * </code>
      * <p/>
      * <br/>
      * The return will be:
      * <br/>
      * <p/>
      * <code>
      * <font color="#808080">1</font>&nbsp;<font color="#ffffff">&nbsp;&nbsp;&nbsp;&nbsp;</font>
      * <font color="#3f5fbf">&#47;&#42;&#42;</font><br />
      * <font color="#808080">2</font>&nbsp;<font color="#ffffff">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</font>
      * <font color="#3f5fbf">&#42;&nbsp;Dummy&nbsp;Javadoc&nbsp;comment.</font><br />
      * <font color="#808080">3</font>&nbsp;<font color="#ffffff">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</font>
      * <font color="#3f5fbf">&#42;&nbsp;</font><font color="#7f9fbf">@param&nbsp;</font>
      * <font color="#3f5fbf">s&nbsp;a&nbsp;String</font><br />
      * <font color="#808080">4</font>&nbsp;<font color="#ffffff">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</font>
      * <font color="#3f5fbf">&#42;&#47;</font><br />
      * </code>
      *
      * @param javaClassContent not null
      * @param entity           not null
      * @return return the original javadoc as String for the current entity
      * @throws IOException if any
      */
     static String extractOriginalJavadoc(final String javaClassContent, final JavaAnnotatedElement entity)
             throws IOException {
         if (entity.getComment() == null) {
             return "";
         }
 
         String[] javaClassContentLines = getLines(javaClassContent);
         List<String> list = new LinkedList<>();
         for (int i = entity.getLineNumber() - 2; i >= 0; i--) {
             String line = javaClassContentLines[i];
 
             list.add(trimRight(line));
             if (line.trim().startsWith(START_JAVADOC)) {
                 break;
             }
         }
 
         Collections.reverse(list);
 
         return StringUtils.join(list.iterator(), EOL);
     }
 
     /**
      * Extract the Javadoc comment between {@link #START_JAVADOC} and {@link #END_JAVADOC} form the entity. This method
      * takes care of the Javadoc indentation. All javadoc lines will be trimmed on right.
      * <br/>
      * For instance, with the following snippet:
      * <br/>
      * <p/>
      * <code>
      * <font color="#808080">1</font>&nbsp;<font color="#ffffff"></font><br />
      * <font color="#808080">2</font>&nbsp;<font color="#ffffff">&nbsp;&nbsp;&nbsp;&nbsp;</font>
      * <font color="#3f5fbf">&#47;&#42;&#42;</font><br />
      * <font color="#808080">3</font>&nbsp;<font color="#ffffff">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</font>
      * <font color="#3f5fbf">&#42;&nbsp;Dummy&nbsp;Javadoc&nbsp;comment.</font><br />
      * <font color="#808080">4</font>&nbsp;<font color="#ffffff">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</font>
      * <font color="#3f5fbf">&#42;&nbsp;</font><font color="#7f9fbf">@param&nbsp;</font>
      * <font color="#3f5fbf">s&nbsp;a&nbsp;String</font><br />
      * <font color="#808080">5</font>&nbsp;<font color="#ffffff">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</font>
      * <font color="#3f5fbf">&#42;&#47;</font><br />
      * <font color="#808080">6</font>&nbsp;<font color="#ffffff">&nbsp;&nbsp;&nbsp;&nbsp;</font>
      * <font color="#7f0055"><b>public&nbsp;</b></font><font color="#7f0055"><b>void&nbsp;</b></font>
      * <font color="#000000">dummyMethod</font><font color="#000000">(&nbsp;</font>
      * <font color="#000000">String&nbsp;s&nbsp;</font><font color="#000000">){}</font><br />
      * </code>
      * <p/>
      * <br/>
      * The return will be:
      * <br/>
      * <p/>
      * <code>
      * <font color="#808080">1</font>&nbsp;<font color="#ffffff">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</font>
      * <font color="#3f5fbf">&#42;&nbsp;Dummy&nbsp;Javadoc&nbsp;comment.</font><br />
      * <font color="#808080">2</font>&nbsp;<font color="#ffffff">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</font>
      * <font color="#3f5fbf">&#42;&nbsp;</font><font color="#7f9fbf">@param&nbsp;</font>
      * <font color="#3f5fbf">s&nbsp;a&nbsp;String</font><br />
      * </code>
      *
      * @param javaClassContent not null
      * @param entity           not null
      * @return return the original javadoc as String for the current entity
      * @throws IOException if any
      */
     static String extractOriginalJavadocContent(final String javaClassContent, final JavaAnnotatedElement entity)
             throws IOException {
         if (entity.getComment() == null) {
             return "";
         }
 
         String originalJavadoc = extractOriginalJavadoc(javaClassContent, entity);
         int index = originalJavadoc.indexOf(START_JAVADOC);
         if (index != -1) {
             originalJavadoc = originalJavadoc.substring(index + START_JAVADOC.length());
         }
         index = originalJavadoc.indexOf(END_JAVADOC);
         if (index != -1) {
             originalJavadoc = originalJavadoc.substring(0, index);
         }
         if (originalJavadoc.startsWith("\r\n")) {
             originalJavadoc = originalJavadoc.substring(2);
         } else if (originalJavadoc.startsWith("\n") || originalJavadoc.startsWith("\r")) {
             originalJavadoc = originalJavadoc.substring(1);
         }
 
         return trimRight(originalJavadoc);
     }
 
     /**
      * @param content not null
      * @return the content without last lines containing javadoc separator (ie <code> * </code>)
      * @throws IOException if any
      * @see #getJavadocComment(String, JavaAnnotatedElement, DocletTag)
      */
     private static String removeLastEmptyJavadocLines(final String content) throws IOException {
         if (!content.contains(EOL)) {
             return content;
         }
 
         String[] lines = getLines(content);
         if (lines.length == 1) {
             return content;
         }
 
         List<String> linesList = new LinkedList<>(Arrays.asList(lines));
 
         Collections.reverse(linesList);
 
         for (Iterator<String> it = linesList.iterator(); it.hasNext(); ) {
             String line = it.next();
 
             if (line.trim().equals("*")) {
                 it.remove();
             } else {
                 break;
             }
         }
 
         Collections.reverse(linesList);
 
         return StringUtils.join(linesList.iterator(), EOL);
     }
 
     /**
      * @param content not null
      * @return the javadoc comment with the given indentation
      * @throws IOException if any
      * @see #getJavadocComment(String, JavaAnnotatedElement, DocletTag)
      */
     private static String alignIndentationJavadocLines(final String content, final String indent) throws IOException {
         StringBuilder sb = new StringBuilder();
         for (String line : getLines(content)) {
             if (sb.length() > 0) {
                 sb.append(EOL);
             }
             if (!line.trim().startsWith("*")) {
                 line = "*" + line;
             }
             sb.append(indent).append(" ").append(trimLeft(line));
         }
 
         return sb.toString();
     }
 
     /**
      * Autodetect the indentation of a given line:
      * <pre>
      * autodetectIndentation( null ) = "";
      * autodetectIndentation( "a" ) = "";
      * autodetectIndentation( "    a" ) = "    ";
      * autodetectIndentation( "\ta" ) = "\t";
      * </pre>
      *
      * @param line not null
      * @return the indentation for the given line.
      */
     private static String autodetectIndentation(final String line) {
         if (StringUtils.isEmpty(line)) {
             return "";
         }
 
         return line.substring(0, line.indexOf(trimLeft(line)));
     }
 
     /**
      * @param content not null
      * @return an array of all content lines
      * @throws IOException if any
      */
     private static String[] getLines(final String content) throws IOException {
         List<String> lines = new LinkedList<>();
 
         BufferedReader reader = new BufferedReader(new StringReader(content));
         String line = reader.readLine();
         while (line != null) {
             lines.add(line);
             line = reader.readLine();
         }
 
         return lines.toArray(new String[lines.size()]);
     }
 
     /**
      * Trim a given line on the left:
      * <pre>
      * trimLeft( null ) = "";
      * trimLeft( "  " ) = "";
      * trimLeft( "a" ) = "a";
      * trimLeft( "    a" ) = "a";
      * trimLeft( "\ta" ) = "a";
      * trimLeft( "    a    " ) = "a    ";
      * </pre>
      *
      * @param text
      * @return the text trimmed on left side or empty if text is null.
      */
     private static String trimLeft(final String text) {
         if (StringUtils.isEmpty(text) || StringUtils.isEmpty(text.trim())) {
             return "";
         }
 
         String textTrimmed = text.trim();
         return text.substring(text.indexOf(textTrimmed));
     }
 
     /**
      * Trim a given line on the right:
      * <pre>
      * trimRight( null ) = "";
      * trimRight( "  " ) = "";
      * trimRight( "a" ) = "a";
      * trimRight( "a\t" ) = "a";
      * trimRight( "    a    " ) = "    a";
      * </pre>
      *
      * @param text
      * @return the text trimmed on tight side or empty if text is null.
      */
     private static String trimRight(final String text) {
         if (StringUtils.isEmpty(text) || StringUtils.isEmpty(text.trim())) {
             return "";
         }
 
         String textTrimmed = text.trim();
         return text.substring(0, text.indexOf(textTrimmed) + textTrimmed.length());
     }
 
     /**
      * Wrapper class for the entity's tags.
      */
     class JavaEntityTags {
         private final JavaAnnotatedElement entity;
 
         private final boolean isJavaMethod;
 
         /**
          * List of tag names.
          */
         private List<String> namesTags;
 
         /**
          * Map with java parameter as key and original Javadoc lines as values.
          */
         private Map<String, String> tagParams;
 
         private Set<String> documentedParams = new HashSet<>();
 
         /**
          * Original javadoc lines.
          */
         private String tagReturn;
 
         /**
          * Map with java throw as key and original Javadoc lines as values.
          */
         private Map<String, String> tagThrows;
 
         /**
          * Original javadoc lines for unknown tags.
          */
         private List<String> unknownsTags;
 
         JavaEntityTags(JavaAnnotatedElement entity, boolean isJavaMethod) {
             this.entity = entity;
             this.isJavaMethod = isJavaMethod;
             this.namesTags = new LinkedList<>();
             this.tagParams = new LinkedHashMap<>();
             this.tagThrows = new LinkedHashMap<>();
             this.unknownsTags = new LinkedList<>();
         }
 
         public List<String> getNamesTags() {
             return namesTags;
         }
 
         public String getJavadocReturnTag() {
             return tagReturn;
         }
 
         public void setJavadocReturnTag(String s) {
             tagReturn = s;
         }
 
         public List<String> getUnknownTags() {
             return unknownsTags;
         }
 
         public void putJavadocParamTag(String paramName, String paramValue, String originalJavadocTag) {
             documentedParams.add(paramName);
             tagParams.put(paramValue, originalJavadocTag);
         }
 
         public String getJavadocParamTag(String paramValue) {
             String originalJavadocTag = tagParams.get(paramValue);
             if (originalJavadocTag == null && getLog().isWarnEnabled()) {
                 getLog().warn(getMessage(paramValue, "javaEntityTags.tagParams"));
             }
             return originalJavadocTag;
         }
 
         public boolean hasJavadocParamTag(String paramName) {
             return documentedParams.contains(paramName);
         }
 
         public void putJavadocThrowsTag(String paramName, String originalJavadocTag) {
             tagThrows.put(paramName, originalJavadocTag);
         }
 
         public String getJavadocThrowsTag(String paramName) {
             return getJavadocThrowsTag(paramName, false);
         }
 
         public String getJavadocThrowsTag(String paramName, boolean nullable) {
             String originalJavadocTag = tagThrows.get(paramName);
             if (!nullable && originalJavadocTag == null && getLog().isWarnEnabled()) {
                 getLog().warn(getMessage(paramName, "javaEntityTags.tagThrows"));
             }
 
             return originalJavadocTag;
         }
 
         private String getMessage(String paramName, String mapName) {
             StringBuilder msg = new StringBuilder();
             msg.append("No param '")
                     .append(paramName)
                     .append("' key found in ")
                     .append(mapName)
                     .append(" for the entity: ");
             if (isJavaMethod) {
                 JavaMethod javaMethod = (JavaMethod) entity;
                 msg.append(getJavaMethodAsString(javaMethod));
             } else {
                 JavaClass javaClass = (JavaClass) entity;
                 msg.append(javaClass.getFullyQualifiedName());
             }
 
             return msg.toString();
         }
 
         /**
          * {@inheritDoc}
          */
         @Override
         public String toString() {
             StringBuilder sb = new StringBuilder();
 
             sb.append("namesTags=").append(namesTags).append("\n");
             sb.append("tagParams=").append(tagParams).append("\n");
             sb.append("tagReturn=").append(tagReturn).append("\n");
             sb.append("tagThrows=").append(tagThrows).append("\n");
             sb.append("unknownsTags=").append(unknownsTags).append("\n");
 
             return sb.toString();
         }
     }
 }