/*
    * 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.plugin.testing.stubs;
  
  import java.io.File;
  import java.io.IOException;
  import java.io.Writer;
  import java.util.ArrayList;
  import java.util.Collections;
  import java.util.List;
  import java.util.Map;
  import java.util.Properties;
  import java.util.Set;
  
  import org.apache.maven.artifact.Artifact;
  import org.apache.maven.artifact.DependencyResolutionRequiredException;
  import org.apache.maven.artifact.factory.ArtifactFactory;
  import org.apache.maven.artifact.repository.ArtifactRepository;
  import org.apache.maven.artifact.resolver.filter.ArtifactFilter;
  import org.apache.maven.model.Build;
  import org.apache.maven.model.CiManagement;
  import org.apache.maven.model.Contributor;
  import org.apache.maven.model.Dependency;
  import org.apache.maven.model.DependencyManagement;
  import org.apache.maven.model.Developer;
  import org.apache.maven.model.DistributionManagement;
  import org.apache.maven.model.Extension;
  import org.apache.maven.model.IssueManagement;
  import org.apache.maven.model.License;
  import org.apache.maven.model.MailingList;
  import org.apache.maven.model.Model;
  import org.apache.maven.model.Organization;
  import org.apache.maven.model.Plugin;
  import org.apache.maven.model.PluginManagement;
  import org.apache.maven.model.Prerequisites;
  import org.apache.maven.model.Profile;
  import org.apache.maven.model.ReportPlugin;
  import org.apache.maven.model.Reporting;
  import org.apache.maven.model.Repository;
  import org.apache.maven.model.Resource;
  import org.apache.maven.model.Scm;
  import org.apache.maven.model.io.xpp3.MavenXpp3Reader;
  import org.apache.maven.project.MavenProject;
  import org.codehaus.plexus.PlexusTestCase;
  import org.codehaus.plexus.testing.PlexusExtension;
  import org.codehaus.plexus.util.xml.XmlStreamReader;
  import org.codehaus.plexus.util.xml.Xpp3Dom;
  import org.codehaus.plexus.util.xml.pull.XmlPullParserException;
  
  /**
   * Very simple stub of <code>MavenProject</code> object, going to take a lot of work to make it
   * useful as a stub though.
   *
   * @author jesse
   */
  public class MavenProjectStub extends MavenProject {
      private String groupId;
  
      private String artifactId;
  
      private String name;
  
      private Model model;
  
      private MavenProject parent;
  
      private File file;
  
      private List<MavenProject> collectedProjects;
  
      private List<Artifact> attachedArtifacts;
  
      private List<String> compileSourceRoots;
  
      private List<String> testCompileSourceRoots;
  
      private List<String> scriptSourceRoots;
  
      private List<ArtifactRepository> pluginArtifactRepositories;
  
      private ArtifactRepository releaseArtifactRepository;
  
      private ArtifactRepository snapshotArtifactRepository;
 
     private List<Profile> activeProfiles;
 
     private Set<Artifact> dependencyArtifacts;
 
     private Artifact artifact;
 
     private Map<String, Artifact> artifactMap;
 
     private Model originalModel;
 
     private Map<String, Artifact> pluginArtifactMap;
 
     private Map<String, Artifact> reportArtifactMap;
 
     private Map<String, Artifact> extensionArtifactMap;
 
     private Map<String, MavenProject> projectReferences;
 
     private Build buildOverlay;
 
     private boolean executionRoot;
 
     private List<Artifact> compileArtifacts;
 
     private List<Dependency> compileDependencies;
 
     private List<Dependency> systemDependencies;
 
     private List<String> testClasspathElements;
 
     private List<Dependency> testDependencies;
 
     private List<String> systemClasspathElements;
 
     private List<Artifact> systemArtifacts;
 
     private List<Artifact> testArtifacts;
 
     private List<Artifact> runtimeArtifacts;
 
     private List<Dependency> runtimeDependencies;
 
     private List<String> runtimeClasspathElements;
 
     private String modelVersion;
 
     private String packaging;
 
     private String inceptionYear;
 
     private String url;
 
     private String description;
 
     private String version;
 
     private String defaultGoal;
 
     private List<License> licenses;
 
     private Build build;
 
     /**
      * Default constructor
      */
     public MavenProjectStub() {
         this(new Model());
     }
 
     /**
      * @param model the given model
      */
     public MavenProjectStub(Model model) {
         super((Model) null);
         this.model = model;
     }
 
     /**
      * Loads the model for this stub from the specified POM. For convenience, any checked exception caused by I/O or
      * parser errors will be wrapped into an unchecked exception.
      *
      * @param pomFile The path to the POM file to load, must not be <code>null</code>. If this path is relative, it
      *            is resolved against the return value of {@link #getBasedir()}.
      */
     protected void readModel(File pomFile) {
         if (!pomFile.isAbsolute()) {
             pomFile = new File(getBasedir(), pomFile.getPath());
         }
         try {
             setModel(new MavenXpp3Reader().read(new XmlStreamReader(pomFile)));
         } catch (IOException e) {
             throw new RuntimeException("Failed to read POM file: " + pomFile, e);
         } catch (XmlPullParserException e) {
             throw new RuntimeException("Failed to parse POM file: " + pomFile, e);
         }
     }
 
     /**
      * No project model is associated
      *
      * @param project the given project
      */
     public MavenProjectStub(MavenProject project) {
         super((Model) null);
     }
 
     /**
      * @param mavenProject
      * @return an empty String
      * @throws IOException if any
      */
     @Override
     public String getModulePathAdjustment(MavenProject mavenProject) throws IOException {
         return "";
     }
 
     /** {@inheritDoc} */
     @Override
     public Artifact getArtifact() {
         return artifact;
     }
 
     /** {@inheritDoc} */
     @Override
     public void setArtifact(Artifact artifact) {
         this.artifact = artifact;
     }
 
     /** {@inheritDoc} */
     @Override
     public Model getModel() {
         return model;
     }
 
     /** {@inheritDoc} */
     @Override
     public MavenProject getParent() {
         return parent;
     }
 
     /** {@inheritDoc} */
     @Override
     public void setParent(MavenProject mavenProject) {
         this.parent = mavenProject;
     }
 
     /**
      * By default, do nothing.
      *
      * @see org.apache.maven.project.MavenProject#setRemoteArtifactRepositories(java.util.List)
      */
     @Override
     public void setRemoteArtifactRepositories(List<ArtifactRepository> list) {
         // nop
     }
 
     /**
      * By default, return <code>Collections.EMPTY_LIST</code>.
      *
      * @see org.apache.maven.project.MavenProject#getRemoteArtifactRepositories()
      */
     @Override
     public List<ArtifactRepository> getRemoteArtifactRepositories() {
         return Collections.<ArtifactRepository>emptyList();
     }
 
     /** {@inheritDoc} */
     @Override
     public boolean hasParent() {
         if (parent != null) {
             return true;
         }
 
         return false;
     }
 
     /** {@inheritDoc} */
     @Override
     public File getFile() {
         return file;
     }
 
     /** {@inheritDoc} */
     @Override
     public void setFile(File file) {
         this.file = file;
     }
 
     /** {@inheritDoc} */
     @Override
     public File getBasedir() {
         try {
             return new File(PlexusExtension.getBasedir());
         } catch (Throwable e) {
             // PlexusExtension use JUnit5 API, so in case of JUnit4 test, fallback to old PlexusTestCase
             return new File(PlexusTestCase.getBasedir());
         }
     }
 
     /**
      * By default, do nothing.
      *
      * @see org.apache.maven.project.MavenProject#setDependencies(java.util.List)
      */
     @Override
     public void setDependencies(List<Dependency> list) {
         // nop
     }
 
     /**
      * By default, return <code>Collections.EMPTY_LIST</code>.
      *
      * @see org.apache.maven.project.MavenProject#getDependencies()
      */
     @Override
     public List<Dependency> getDependencies() {
         return Collections.<Dependency>emptyList();
     }
 
     /**
      * By default, return <code>null</code>.
      *
      * @see org.apache.maven.project.MavenProject#getDependencyManagement()
      */
     @Override
     public DependencyManagement getDependencyManagement() {
         return null;
     }
 
     /** {@inheritDoc} */
     @Override
     public void addCompileSourceRoot(String string) {
         if (compileSourceRoots == null) {
             compileSourceRoots = new ArrayList<>(Collections.singletonList(string));
         } else {
             compileSourceRoots.add(string);
         }
     }
 
     /** {@inheritDoc} */
     @Override
     public void addScriptSourceRoot(String string) {
         if (scriptSourceRoots == null) {
             scriptSourceRoots = new ArrayList<>(Collections.singletonList(string));
         } else {
             scriptSourceRoots.add(string);
         }
     }
 
     /** {@inheritDoc} */
     @Override
     public void addTestCompileSourceRoot(String string) {
         if (testCompileSourceRoots == null) {
             testCompileSourceRoots = new ArrayList<>(Collections.singletonList(string));
         } else {
             testCompileSourceRoots.add(string);
         }
     }
 
     /** {@inheritDoc} */
     @Override
     public List<String> getCompileSourceRoots() {
         return compileSourceRoots;
     }
 
     /** {@inheritDoc} */
     @Override
     public List<String> getScriptSourceRoots() {
         return scriptSourceRoots;
     }
 
     /** {@inheritDoc} */
     @Override
     public List<String> getTestCompileSourceRoots() {
         return testCompileSourceRoots;
     }
 
     /** {@inheritDoc} */
     @Override
     public List<String> getCompileClasspathElements() throws DependencyResolutionRequiredException {
         return compileSourceRoots;
     }
 
     /**
      * @param compileArtifacts
      */
     public void setCompileArtifacts(List<Artifact> compileArtifacts) {
         this.compileArtifacts = compileArtifacts;
     }
 
     /** {@inheritDoc} */
     @Override
     public List<Artifact> getCompileArtifacts() {
         return compileArtifacts;
     }
 
     /** {@inheritDoc} */
     @Override
     public List<Dependency> getCompileDependencies() {
         return compileDependencies;
     }
 
     /** {@inheritDoc} */
     @Override
     public List<String> getTestClasspathElements() throws DependencyResolutionRequiredException {
         return testClasspathElements;
     }
 
     /** {@inheritDoc} */
     @Override
     public List<Artifact> getTestArtifacts() {
         return testArtifacts;
     }
 
     /** {@inheritDoc} */
     @Override
     public List<Dependency> getTestDependencies() {
         return testDependencies;
     }
 
     /** {@inheritDoc} */
     @Override
     public List<String> getRuntimeClasspathElements() throws DependencyResolutionRequiredException {
         return runtimeClasspathElements;
     }
 
     /** {@inheritDoc} */
     @Override
     public List<Artifact> getRuntimeArtifacts() {
         return runtimeArtifacts;
     }
 
     /** {@inheritDoc} */
     @Override
     public List<Dependency> getRuntimeDependencies() {
         return runtimeDependencies;
     }
 
     /** {@inheritDoc} */
     @Override
     public List<String> getSystemClasspathElements() throws DependencyResolutionRequiredException {
         return systemClasspathElements;
     }
 
     /** {@inheritDoc} */
     @Override
     public List<Artifact> getSystemArtifacts() {
         return systemArtifacts;
     }
 
     /**
      * @param runtimeClasspathElements
      */
     public void setRuntimeClasspathElements(List<String> runtimeClasspathElements) {
         this.runtimeClasspathElements = runtimeClasspathElements;
     }
 
     /**
      * @param attachedArtifacts
      */
     @Override
     public void setAttachedArtifacts(List<Artifact> attachedArtifacts) {
         this.attachedArtifacts = attachedArtifacts;
     }
 
     /**
      * @param compileSourceRoots
      */
     @Override
     public void setCompileSourceRoots(List<String> compileSourceRoots) {
         this.compileSourceRoots = compileSourceRoots;
     }
 
     /**
      * @param testCompileSourceRoots
      */
     @Override
     public void setTestCompileSourceRoots(List<String> testCompileSourceRoots) {
         this.testCompileSourceRoots = testCompileSourceRoots;
     }
 
     /**
      * @param scriptSourceRoots
      */
     @Override
     public void setScriptSourceRoots(List<String> scriptSourceRoots) {
         this.scriptSourceRoots = scriptSourceRoots;
     }
 
     /**
      * @param artifactMap
      */
     public void setArtifactMap(Map<String, Artifact> artifactMap) {
         this.artifactMap = artifactMap;
     }
 
     /**
      * @param pluginArtifactMap
      */
     public void setPluginArtifactMap(Map<String, Artifact> pluginArtifactMap) {
         this.pluginArtifactMap = pluginArtifactMap;
     }
 
     /**
      * @param reportArtifactMap
      */
     public void setReportArtifactMap(Map<String, Artifact> reportArtifactMap) {
         this.reportArtifactMap = reportArtifactMap;
     }
 
     /**
      * @param extensionArtifactMap
      */
     public void setExtensionArtifactMap(Map<String, Artifact> extensionArtifactMap) {
         this.extensionArtifactMap = extensionArtifactMap;
     }
 
     /**
      * @param projectReferences
      */
     public void setProjectReferences(Map<String, MavenProject> projectReferences) {
         this.projectReferences = projectReferences;
     }
 
     /**
      * @param buildOverlay
      */
     public void setBuildOverlay(Build buildOverlay) {
         this.buildOverlay = buildOverlay;
     }
 
     /**
      * @param compileDependencies
      */
     public void setCompileDependencies(List<Dependency> compileDependencies) {
         this.compileDependencies = compileDependencies;
     }
 
     /**
      * @param systemDependencies
      */
     public void setSystemDependencies(List<Dependency> systemDependencies) {
         this.systemDependencies = systemDependencies;
     }
 
     /**
      * @param testClasspathElements
      */
     public void setTestClasspathElements(List<String> testClasspathElements) {
         this.testClasspathElements = testClasspathElements;
     }
 
     /**
      * @param testDependencies
      */
     public void setTestDependencies(List<Dependency> testDependencies) {
         this.testDependencies = testDependencies;
     }
 
     /**
      * @param systemClasspathElements
      */
     public void setSystemClasspathElements(List<String> systemClasspathElements) {
         this.systemClasspathElements = systemClasspathElements;
     }
 
     /**
      * @param systemArtifacts
      */
     public void setSystemArtifacts(List<Artifact> systemArtifacts) {
         this.systemArtifacts = systemArtifacts;
     }
 
     /**
      * @param testArtifacts
      */
     public void setTestArtifacts(List<Artifact> testArtifacts) {
         this.testArtifacts = testArtifacts;
     }
 
     /**
      * @param runtimeArtifacts
      */
     public void setRuntimeArtifacts(List<Artifact> runtimeArtifacts) {
         this.runtimeArtifacts = runtimeArtifacts;
     }
 
     /**
      * @param runtimeDependencies
      */
     public void setRuntimeDependencies(List<Dependency> runtimeDependencies) {
         this.runtimeDependencies = runtimeDependencies;
     }
 
     /**
      * @param model
      */
     @Override
     public void setModel(Model model) {
         this.model = model;
     }
 
     /** {@inheritDoc} */
     @Override
     public List<Dependency> getSystemDependencies() {
         return systemDependencies;
     }
 
     /** {@inheritDoc} */
     @Override
     public void setModelVersion(String string) {
         this.modelVersion = string;
     }
 
     /** {@inheritDoc} */
     @Override
     public String getModelVersion() {
         return modelVersion;
     }
 
     /**
      * By default, return an empty String.
      *
      * @see org.apache.maven.project.MavenProject#getId()
      */
     @Override
     public String getId() {
         return "";
     }
 
     /** {@inheritDoc} */
     @Override
     public void setGroupId(String string) {
         this.groupId = string;
     }
 
     /** {@inheritDoc} */
     @Override
     public String getGroupId() {
         return groupId;
     }
 
     /** {@inheritDoc} */
     @Override
     public void setArtifactId(String string) {
         this.artifactId = string;
     }
 
     /** {@inheritDoc} */
     @Override
     public String getArtifactId() {
         return artifactId;
     }
 
     /** {@inheritDoc} */
     @Override
     public void setName(String string) {
         this.name = string;
     }
 
     /** {@inheritDoc} */
     @Override
     public String getName() {
         return name;
     }
 
     /** {@inheritDoc} */
     @Override
     public void setVersion(String string) {
         this.version = string;
     }
 
     /** {@inheritDoc} */
     @Override
     public String getVersion() {
         return version;
     }
 
     /** {@inheritDoc} */
     @Override
     public String getPackaging() {
         return packaging;
     }
 
     /** {@inheritDoc} */
     @Override
     public void setPackaging(String string) {
         this.packaging = string;
     }
 
     /** {@inheritDoc} */
     @Override
     public void setInceptionYear(String string) {
         this.inceptionYear = string;
     }
 
     /** {@inheritDoc} */
     @Override
     public String getInceptionYear() {
         return inceptionYear;
     }
 
     /** {@inheritDoc} */
     @Override
     public void setUrl(String string) {
         this.url = string;
     }
 
     /** {@inheritDoc} */
     @Override
     public String getUrl() {
         return url;
     }
 
     /**
      * By default, return <code>null</code>.
      *
      * @see org.apache.maven.project.MavenProject#getPrerequisites()
      */
     @Override
     public Prerequisites getPrerequisites() {
         return null;
     }
 
     /**
      * By default, do nothing.
      *
      * @see org.apache.maven.project.MavenProject#setIssueManagement(org.apache.maven.model.IssueManagement)
      */
     @Override
     public void setIssueManagement(IssueManagement issueManagement) {
         // nop
     }
 
     /**
      * By default, return <code>null</code>.
      *
      * @see org.apache.maven.project.MavenProject#getCiManagement()
      */
     @Override
     public CiManagement getCiManagement() {
         return null;
     }
 
     /**
      * By default, do nothing.
      *
      * @see org.apache.maven.project.MavenProject#setCiManagement(org.apache.maven.model.CiManagement)
      */
     @Override
     public void setCiManagement(CiManagement ciManagement) {
         // nop
     }
 
     /**
      * By default, return <code>null</code>.
      *
      * @see org.apache.maven.project.MavenProject#getIssueManagement()
      */
     @Override
     public IssueManagement getIssueManagement() {
         return null;
     }
 
     /**
      * By default, do nothing.
      *
      * @see org.apache.maven.project.MavenProject#setDistributionManagement(org.apache.maven.model.DistributionManagement)
      */
     @Override
     public void setDistributionManagement(DistributionManagement distributionManagement) {
         // nop
     }
 
     /**
      * By default, return <code>null</code>.
      *
      * @see org.apache.maven.project.MavenProject#getDistributionManagement()
      */
     @Override
     public DistributionManagement getDistributionManagement() {
         return null;
     }
 
     /** {@inheritDoc} */
     @Override
     public void setDescription(String string) {
         this.description = string;
     }
 
     /** {@inheritDoc} */
     @Override
     public String getDescription() {
         return description;
     }
 
     /**
      * By default, do nothing.
      *
      * @see org.apache.maven.project.MavenProject#setOrganization(org.apache.maven.model.Organization)
      */
     @Override
     public void setOrganization(Organization organization) {
         // nop
     }
 
     /**
      * By default, return <code>null</code>.
      *
      * @see org.apache.maven.project.MavenProject#getOrganization()
      */
     @Override
     public Organization getOrganization() {
         return null;
     }
 
     /**
      * By default, do nothing.
      *
      * @see org.apache.maven.project.MavenProject#setScm(org.apache.maven.model.Scm)
      */
     @Override
     public void setScm(Scm scm) {
         // nop
     }
 
     /**
      * By default, return <code>null</code>.
      *
      * @see org.apache.maven.project.MavenProject#getScm()
      */
     @Override
     public Scm getScm() {
         return null;
     }
 
     /**
      * By default, do nothing.
      *
      * @see org.apache.maven.project.MavenProject#setMailingLists(java.util.List)
      */
     @Override
     public void setMailingLists(List<MailingList> list) {
         // nop
     }
 
     /**
      * By default, return <code>Collections.EMPTY_LIST</code>.
      *
      * @see org.apache.maven.project.MavenProject#getMailingLists()
      */
     @Override
     public List<MailingList> getMailingLists() {
         return Collections.<MailingList>emptyList();
     }
 
     /**
      * By default, do nothing.
      *
      * @see org.apache.maven.project.MavenProject#addMailingList(org.apache.maven.model.MailingList)
      */
     @Override
     public void addMailingList(MailingList mailingList) {
         // nop
     }
 
     /**
      * By default, do nothing.
      *
      * @see org.apache.maven.project.MavenProject#setDevelopers(java.util.List)
      */
     @Override
     public void setDevelopers(List<Developer> list) {
         // nop
     }
 
     /**
      * By default, return <code>Collections.EMPTY_LIST</code>.
      *
      * @see org.apache.maven.project.MavenProject#getDevelopers()
      */
     @Override
     public List<Developer> getDevelopers() {
         return Collections.<Developer>emptyList();
     }
 
     /**
      * By default, do nothing.
      *
      * @see org.apache.maven.project.MavenProject#addDeveloper(org.apache.maven.model.Developer)
      */
     @Override
     public void addDeveloper(Developer developer) {
         // nop
     }
 
     /**
      * By default, do nothing.
      *
      * @see org.apache.maven.project.MavenProject#setContributors(java.util.List)
      */
     @Override
     public void setContributors(List<Contributor> list) {
         // nop
     }
 
     /**
      * By default, return <code>Collections.EMPTY_LIST</code>.
      *
      * @see org.apache.maven.project.MavenProject#getContributors()
      */
     @Override
     public List<Contributor> getContributors() {
         return Collections.<Contributor>emptyList();
     }
 
     /**
      * By default, do nothing.
      *
      * @see org.apache.maven.project.MavenProject#addContributor(org.apache.maven.model.Contributor)
      */
     @Override
     public void addContributor(Contributor contributor) {
         // nop
     }
 
     /** {@inheritDoc} */
     @Override
     public void setBuild(Build build) {
         this.build = build;
     }
 
     /** {@inheritDoc} */
     @Override
     public Build getBuild() {
         return build;
     }
 
     /**
      * By default, return <code>Collections.EMPTY_LIST</code>.
      *
      * @see org.apache.maven.project.MavenProject#getResources()
      */
     @Override
     public List<Resource> getResources() {
         return Collections.<Resource>emptyList();
     }
 
     /**
      * By default, return <code>Collections.EMPTY_LIST</code>.
      *
      * @see org.apache.maven.project.MavenProject#getTestResources()
      */
     @Override
     public List<Resource> getTestResources() {
         return Collections.<Resource>emptyList();
     }
 
     /**
      * By default, do nothing.
      *
      * @see org.apache.maven.project.MavenProject#addResource(org.apache.maven.model.Resource)
      */
     @Override
     public void addResource(Resource resource) {
         // nop
     }
 
     /**
      * By default, do nothing.
      *
      * @see org.apache.maven.project.MavenProject#addTestResource(org.apache.maven.model.Resource)
      */
     @Override
     public void addTestResource(Resource resource) {
         // nop
     }
 
     /**
      * By default, do nothing.
      *
      * @see org.apache.maven.project.MavenProject#setReporting(org.apache.maven.model.Reporting)
      */
     @Override
     public void setReporting(Reporting reporting) {
         // nop
     }
 
     /**
      * By default, return <code>null</code>.
      *
      * @see org.apache.maven.project.MavenProject#getReporting()
      */
     @Override
     public Reporting getReporting() {
         return null;
     }
 
     /** {@inheritDoc} */
     @Override
     public void setLicenses(List<License> licenses) {
         this.licenses = licenses;
     }
 
     /** {@inheritDoc} */
     @Override
     public List<License> getLicenses() {
         return licenses;
     }
 
     /**
      * By default, do nothing.
      *
      * @see org.apache.maven.project.MavenProject#addLicense(org.apache.maven.model.License)
      */
     @Override
     public void addLicense(License license) {
         // nop
     }
 
     /**
      * By default, do nothing.
      *
      * @see org.apache.maven.project.MavenProject#setArtifacts(java.util.Set)
      */
     @Override
     public void setArtifacts(Set<Artifact> set) {
         // nop
     }
 
     /**
      * By default, return <code>Collections.EMPTY_SET</code>.
      *
      * @see org.apache.maven.project.MavenProject#getArtifacts()
      */
     @Override
     public Set<Artifact> getArtifacts() {
         return Collections.<Artifact>emptySet();
     }
 
     /**
      * By default, return <code>Collections.EMPTY_MAP</code>.
      *
      * @see org.apache.maven.project.MavenProject#getArtifactMap()
      */
     @Override
     public Map<String, Artifact> getArtifactMap() {
         return Collections.<String, Artifact>emptyMap();
     }
 
     /**
      * By default, do nothing.
      *
      * @see org.apache.maven.project.MavenProject#setPluginArtifacts(java.util.Set)
      */
     @Override
     public void setPluginArtifacts(Set<Artifact> set) {
         // nop
     }
 
     /**
      * By default, return <code>Collections.EMPTY_SET</code>.
      *
      * @see org.apache.maven.project.MavenProject#getPluginArtifacts()
      */
     @Override
     public Set<Artifact> getPluginArtifacts() {
         return Collections.<Artifact>emptySet();
     }
 
     /**
      * By default, return <code>Collections.EMPTY_MAP</code>.
      *
      * @see org.apache.maven.project.MavenProject#getPluginArtifactMap()
      */
     @Override
     public Map<String, Artifact> getPluginArtifactMap() {
         return Collections.<String, Artifact>emptyMap();
     }
 
     /**
      * By default, do nothing.
      *
      * @see org.apache.maven.project.MavenProject#setReportArtifacts(java.util.Set)
      */
     @Override
     public void setReportArtifacts(Set<Artifact> set) {
         // nop
     }
 
     /**
      * By default, return <code>Collections.EMPTY_SET</code>.
      *
      * @see org.apache.maven.project.MavenProject#getReportArtifacts()
      */
     @Override
     public Set<Artifact> getReportArtifacts() {
         return Collections.<Artifact>emptySet();
     }
 
     /**
      * By default, return <code>Collections.EMPTY_MAP</code>.
      *
      * @see org.apache.maven.project.MavenProject#getReportArtifactMap()
      */
     @Override
     public Map<String, Artifact> getReportArtifactMap() {
         return Collections.<String, Artifact>emptyMap();
     }
 
     /**
      * By default, do nothing.
      *
      * @see org.apache.maven.project.MavenProject#setExtensionArtifacts(java.util.Set)
      */
     @Override
     public void setExtensionArtifacts(Set<Artifact> set) {
         // nop
     }
 
     /**
      * By default, return <code>Collections.EMPTY_SET</code>.
      *
      * @see org.apache.maven.project.MavenProject#getExtensionArtifacts()
      */
     @Override
     public Set<Artifact> getExtensionArtifacts() {
         return Collections.<Artifact>emptySet();
     }
 
     /**
      * By default, return <code>Collections.EMPTY_MAP</code>.
      *
      * @see org.apache.maven.project.MavenProject#getExtensionArtifactMap()
      */
     @Override
     public Map<String, Artifact> getExtensionArtifactMap() {
         return Collections.<String, Artifact>emptyMap();
     }
 
     /**
      * By default, do nothing.
      *
      * @see org.apache.maven.project.MavenProject#setParentArtifact(org.apache.maven.artifact.Artifact)
      */
     @Override
     public void setParentArtifact(Artifact artifact) {
         // nop
     }
 
     /**
      * By default, return <code>null</code>.
      *
      * @see org.apache.maven.project.MavenProject#getParentArtifact()
      */
     @Override
     public Artifact getParentArtifact() {
         return null;
     }
 
     /**
      * By default, return <code>Collections.EMPTY_LIST</code>.
      *
      * @see org.apache.maven.project.MavenProject#getRepositories()
      */
     @Override
     public List<Repository> getRepositories() {
         return Collections.<Repository>emptyList();
     }
 
     /**
      * By default, return <code>Collections.EMPTY_LIST</code>.
      *
      * @see org.apache.maven.project.MavenProject#getReportPlugins()
      */
     @Override
     public List<ReportPlugin> getReportPlugins() {
         return Collections.<ReportPlugin>emptyList();
     }
 
     /**
      * By default, return <code>Collections.EMPTY_LIST</code>.
      *
      * @see org.apache.maven.project.MavenProject#getBuildPlugins()
      */
     @Override
     public List<Plugin> getBuildPlugins() {
         return Collections.<Plugin>emptyList();
     }
 
     /**
      * By default, return <code>Collections.EMPTY_LIST</code>.
      *
      * @see org.apache.maven.project.MavenProject#getModules()
      */
     @Override
     public List<String> getModules() {
         return Collections.<String>emptyList();
     }
 
     /**
      * By default, return <code>null</code>.
      *
      * @see org.apache.maven.project.MavenProject#getPluginManagement()
      */
     @Override
     public PluginManagement getPluginManagement() {
         return null;
     }
 
     /**
      * By default, do nothing.
      */
     public void addPlugin(Plugin plugin) {
         // nop
     }
 
     /**
      * By default, do nothing.
      *
      * @param plugin
      */
     public void injectPluginManagementInfo(Plugin plugin) {
         // nop
     }
 
     /** {@inheritDoc} */
     @Override
     public List<MavenProject> getCollectedProjects() {
         return collectedProjects;
     }
 
     /** {@inheritDoc} */
     @Override
     public void setCollectedProjects(List<MavenProject> list) {
         this.collectedProjects = list;
     }
 
     /** {@inheritDoc} */
     @Override
     public void setPluginArtifactRepositories(List<ArtifactRepository> list) {
         this.pluginArtifactRepositories = list;
     }
 
     /** {@inheritDoc} */
     @Override
     public List<ArtifactRepository> getPluginArtifactRepositories() {
         return pluginArtifactRepositories;
     }
 
     /**
      * By default, return <code>null</code>.
      *
      * @see org.apache.maven.project.MavenProject#getDistributionManagementArtifactRepository()
      */
     @Override
     public ArtifactRepository getDistributionManagementArtifactRepository() {
         return null;
     }
 
     /**
      * By default, return <code>Collections.EMPTY_LIST</code>.
      *
      * @see org.apache.maven.project.MavenProject#getPluginRepositories()
      */
     @Override
     public List<Repository> getPluginRepositories() {
         return Collections.<Repository>emptyList();
     }
 
     /** {@inheritDoc} */
     @Override
     public void setActiveProfiles(List<Profile> list) {
         activeProfiles = list;
     }
 
     /** {@inheritDoc} */
     @Override
     public List<Profile> getActiveProfiles() {
         return activeProfiles;
     }
 
     /** {@inheritDoc} */
     @Override
     public void addAttachedArtifact(Artifact artifact) {
         if (attachedArtifacts == null) {
             this.attachedArtifacts = new ArrayList<>(Collections.singletonList(artifact));
         } else {
             attachedArtifacts.add(artifact);
         }
     }
 
     /** {@inheritDoc} */
     @Override
     public List<Artifact> getAttachedArtifacts() {
         return attachedArtifacts;
     }
 
     /**
      * By default, return <code>null</code>.
      *
      * @see org.apache.maven.project.MavenProject#getGoalConfiguration(java.lang.String, java.lang.String, java.lang.String, java.lang.String)
      */
     @Override
     public Xpp3Dom getGoalConfiguration(String string, String string1, String string2, String string3) {
         return null;
     }
 
     /**
      * By default, return <code>null</code>.
      *
      * @see org.apache.maven.project.MavenProject#getReportConfiguration(java.lang.String, java.lang.String, java.lang.String)
      */
     @Override
     public Xpp3Dom getReportConfiguration(String string, String string1, String string2) {
         return null;
     }
 
     /**
      * By default, return <code>null</code>.
      *
      * @see org.apache.maven.project.MavenProject#getExecutionProject()
      */
     @Override
     public MavenProject getExecutionProject() {
         return null;
     }
 
     /**
      * By default, do nothing.
      *
      * @see org.apache.maven.project.MavenProject#setExecutionProject(org.apache.maven.project.MavenProject)
      */
     @Override
     public void setExecutionProject(MavenProject mavenProject) {
         // nop
     }
 
     /**
      * By default, do nothing.
      *
      * @see org.apache.maven.project.MavenProject#writeModel(java.io.Writer)
      */
     @Override
     public void writeModel(Writer writer) throws IOException {
         // nop
     }
 
     /**
      * By default, do nothing.
      *
      * @see org.apache.maven.project.MavenProject#writeOriginalModel(java.io.Writer)
      */
     @Override
     public void writeOriginalModel(Writer writer) throws IOException {
         // nop
     }
 
     /** {@inheritDoc} */
     @Override
     public Set<Artifact> getDependencyArtifacts() {
         return dependencyArtifacts;
     }
 
     /** {@inheritDoc} */
     @Override
     public void setDependencyArtifacts(Set<Artifact> set) {
         this.dependencyArtifacts = set;
     }
 
     /** {@inheritDoc} */
     @Override
     public void setReleaseArtifactRepository(ArtifactRepository artifactRepository) {
         this.releaseArtifactRepository = artifactRepository;
     }
 
     /** {@inheritDoc} */
     @Override
     public void setSnapshotArtifactRepository(ArtifactRepository artifactRepository) {
         this.snapshotArtifactRepository = artifactRepository;
     }
 
     /** {@inheritDoc} */
     @Override
     public void setOriginalModel(Model model) {
         this.originalModel = model;
     }
 
     /** {@inheritDoc} */
     @Override
     public Model getOriginalModel() {
         return originalModel;
     }
 
     /**
      * By default, return <code>Collections.EMPTY_LIST</code>.
      *
      * @see org.apache.maven.project.MavenProject#getBuildExtensions()
      */
     @Override
     public List<Extension> getBuildExtensions() {
         return Collections.<Extension>emptyList();
     }
 
     /**
      * By default, return <code>Collections.EMPTY_SET</code>.
      *
      * @see org.apache.maven.project.MavenProject#createArtifacts(org.apache.maven.artifact.factory.ArtifactFactory, java.lang.String, org.apache.maven.artifact.resolver.filter.ArtifactFilter)
      */
     @Override
     public Set<Artifact> createArtifacts(
             ArtifactFactory artifactFactory, String string, ArtifactFilter artifactFilter) {
         return Collections.<Artifact>emptySet();
     }
 
     /**
      * By default, do nothing.
      *
      * @see org.apache.maven.project.MavenProject#addProjectReference(org.apache.maven.project.MavenProject)
      */
     @Override
     public void addProjectReference(MavenProject mavenProject) {
         // nop
     }
 
     /**
      * By default, do nothing.
      *
      * @see org.apache.maven.project.MavenProject#attachArtifact(java.lang.String, java.lang.String, java.io.File)
      */
     @Override
     public void attachArtifact(String string, String string1, File file) {
         // nop
     }
 
     /**
      * By default, return a new instance of <code>Properties</code>.
      *
      * @see org.apache.maven.project.MavenProject#getProperties()
      */
     @Override
     public Properties getProperties() {
         return new Properties();
     }
 
     /**
      * By default, return <code>Collections.EMPTY_LIST</code>.
      *
      * @see org.apache.maven.project.MavenProject#getFilters()
      */
     @Override
     public List<String> getFilters() {
         return Collections.<String>emptyList();
     }
 
     /**
      * By default, return <code>Collections.EMPTY_MAP</code>.
      *
      * @see org.apache.maven.project.MavenProject#getProjectReferences()
      */
     @Override
     public Map<String, MavenProject> getProjectReferences() {
         return Collections.<String, MavenProject>emptyMap();
     }
 
     /** {@inheritDoc} */
     @Override
     public boolean isExecutionRoot() {
         return executionRoot;
     }
 
     /** {@inheritDoc} */
     @Override
     public void setExecutionRoot(boolean b) {
         this.executionRoot = b;
     }
 
     /** {@inheritDoc} */
     @Override
     public String getDefaultGoal() {
         return defaultGoal;
     }
 
     /**
      * By default, return <code>null</code>.
      *
      * @see org.apache.maven.project.MavenProject#replaceWithActiveArtifact(org.apache.maven.artifact.Artifact)
      */
     @Override
     public Artifact replaceWithActiveArtifact(Artifact artifact) {
         return null;
     }
 }