// =================== DO NOT EDIT THIS FILE ====================
   //  Generated by Modello Velocity from model.vm
   //  template, any modifications will be overwritten.
   // ==============================================================
   package org.apache.maven.api.metadata;
   
   import java.io.Serializable;
   import java.util.ArrayList;
   import java.util.Collection;
  import java.util.Collections;
  import java.util.HashMap;
  import java.util.List;
  import java.util.Map;
  import java.util.Objects;
  import java.util.Optional;
  import java.util.Set;
  import java.util.stream.Collectors;
  import java.util.stream.Stream;
  import org.apache.maven.api.annotations.Experimental;
  import org.apache.maven.api.annotations.Generated;
  import org.apache.maven.api.annotations.Immutable;
  import org.apache.maven.api.annotations.Nonnull;
  import org.apache.maven.api.annotations.NotThreadSafe;
  import org.apache.maven.api.annotations.ThreadSafe;
  
  /**
   */
  @Experimental
  @Generated @ThreadSafe @Immutable
  public class Metadata
      implements Serializable
  {
      final String namespaceUri;
      final String modelEncoding;
      /**
       * The version of the underlying metadata model.
       */
      final String modelVersion;
      /**
       * The groupId when this directory represents "groupId/artifactId" or "groupId/artifactId/version".
       */
      final String groupId;
      /**
       * The artifactId when this directory represents "groupId/artifactId" or "groupId/artifactId/version".
       */
      final String artifactId;
      /**
       * Versioning information when this directory represents "groupId/artifactId" or "groupId/artifactId/version".
       */
      final Versioning versioning;
      /**
       * The base version (i.e. ending in {@code -SNAPSHOT}) when this directory represents a "groupId/artifactId/version" for a SNAPSHOT.
       */
      final String version;
      /**
       * The set of plugins when this directory represents a "groupId".
       */
      final List<Plugin> plugins;
  
      /**
        * Constructor for this class, to be called from its subclasses and {@link Builder}.
        * @see Builder#build()
        */
      protected Metadata(Builder builder) {
          this.namespaceUri = builder.namespaceUri != null ? builder.namespaceUri : (builder.base != null ? builder.base.namespaceUri : null);
          this.modelEncoding = builder.modelEncoding != null ? builder.modelEncoding : (builder.base != null ? builder.base.modelEncoding :  "UTF-8");
          this.modelVersion = builder.modelVersion != null ? builder.modelVersion : (builder.base != null ? builder.base.modelVersion : null);
          this.groupId = builder.groupId != null ? builder.groupId : (builder.base != null ? builder.base.groupId : null);
          this.artifactId = builder.artifactId != null ? builder.artifactId : (builder.base != null ? builder.base.artifactId : null);
          this.versioning = builder.versioning != null ? builder.versioning : (builder.base != null ? builder.base.versioning : null);
          this.version = builder.version != null ? builder.version : (builder.base != null ? builder.base.version : null);
          this.plugins = ImmutableCollections.copy(builder.plugins != null ? builder.plugins : (builder.base != null ? builder.base.plugins : null));
      }
  
      public String getNamespaceUri() {
          return namespaceUri;
      }
  
      public String getModelEncoding() {
          return modelEncoding;
      }
  
      /**
       * The version of the underlying metadata model.
       *
       * @return a {@code String}
       */
      public String getModelVersion() {
          return this.modelVersion;
      }
  
      /**
       * The groupId when this directory represents "groupId/artifactId" or "groupId/artifactId/version".
       *
       * @return a {@code String}
       */
      public String getGroupId() {
          return this.groupId;
      }
 
     /**
      * The artifactId when this directory represents "groupId/artifactId" or "groupId/artifactId/version".
      *
      * @return a {@code String}
      */
     public String getArtifactId() {
         return this.artifactId;
     }
 
     /**
      * Versioning information when this directory represents "groupId/artifactId" or "groupId/artifactId/version".
      *
      * @return a {@code Versioning}
      */
     public Versioning getVersioning() {
         return this.versioning;
     }
 
     /**
      * The base version (i.e. ending in {@code -SNAPSHOT}) when this directory represents a "groupId/artifactId/version" for a SNAPSHOT.
      *
      * @return a {@code String}
      */
     public String getVersion() {
         return this.version;
     }
 
     /**
      * The set of plugins when this directory represents a "groupId".
      *
      * @return a {@code List<Plugin>}
      */
     @Nonnull
     public List<Plugin> getPlugins() {
         return this.plugins;
     }
 
     /**
      * Creates a new builder with this object as the basis.
      *
      * @return a {@code Builder}
      */
     @Nonnull
     public Builder with() {
         return newBuilder(this);
     }
     /**
      * Creates a new {@code Metadata} instance using the specified modelVersion.
      *
      * @param modelVersion the new {@code String} to use
      * @return a {@code Metadata} with the specified modelVersion
      */
     @Nonnull
     public Metadata withModelVersion(String modelVersion) {
         return newBuilder(this, true).modelVersion(modelVersion).build();
     }
     /**
      * Creates a new {@code Metadata} instance using the specified groupId.
      *
      * @param groupId the new {@code String} to use
      * @return a {@code Metadata} with the specified groupId
      */
     @Nonnull
     public Metadata withGroupId(String groupId) {
         return newBuilder(this, true).groupId(groupId).build();
     }
     /**
      * Creates a new {@code Metadata} instance using the specified artifactId.
      *
      * @param artifactId the new {@code String} to use
      * @return a {@code Metadata} with the specified artifactId
      */
     @Nonnull
     public Metadata withArtifactId(String artifactId) {
         return newBuilder(this, true).artifactId(artifactId).build();
     }
     /**
      * Creates a new {@code Metadata} instance using the specified versioning.
      *
      * @param versioning the new {@code Versioning} to use
      * @return a {@code Metadata} with the specified versioning
      */
     @Nonnull
     public Metadata withVersioning(Versioning versioning) {
         return newBuilder(this, true).versioning(versioning).build();
     }
     /**
      * Creates a new {@code Metadata} instance using the specified version.
      *
      * @param version the new {@code String} to use
      * @return a {@code Metadata} with the specified version
      */
     @Nonnull
     public Metadata withVersion(String version) {
         return newBuilder(this, true).version(version).build();
     }
     /**
      * Creates a new {@code Metadata} instance using the specified plugins.
      *
      * @param plugins the new {@code Collection<Plugin>} to use
      * @return a {@code Metadata} with the specified plugins
      */
     @Nonnull
     public Metadata withPlugins(Collection<Plugin> plugins) {
         return newBuilder(this, true).plugins(plugins).build();
     }
 
     /**
      * Creates a new {@code Metadata} instance.
      * Equivalent to {@code newInstance(true)}.
      * @see #newInstance(boolean)
      *
      * @return a new {@code Metadata}
      */
     @Nonnull
     public static Metadata newInstance() {
         return newInstance(true);
     }
 
     /**
      * Creates a new {@code Metadata} instance using default values or not.
      * Equivalent to {@code newBuilder(withDefaults).build()}.
      *
      * @param withDefaults the boolean indicating whether default values should be used
      * @return a new {@code Metadata}
      */
     @Nonnull
     public static Metadata newInstance(boolean withDefaults) {
         return newBuilder(withDefaults).build();
     }
 
     /**
      * Creates a new {@code Metadata} builder instance.
      * Equivalent to {@code newBuilder(true)}.
      * @see #newBuilder(boolean)
      *
      * @return a new {@code Builder}
      */
     @Nonnull
     public static Builder newBuilder() {
         return newBuilder(true);
     }
 
     /**
      * Creates a new {@code Metadata} builder instance using default values or not.
      *
      * @param withDefaults the boolean indicating whether default values should be used
      * @return a new {@code Builder}
      */
     @Nonnull
     public static Builder newBuilder(boolean withDefaults) {
         return new Builder(withDefaults);
     }
 
     /**
      * Creates a new {@code Metadata} builder instance using the specified object as a basis.
      * Equivalent to {@code newBuilder(from, false)}.
      *
      * @param from the {@code Metadata} instance to use as a basis
      * @return a new {@code Builder}
      */
     @Nonnull
     public static Builder newBuilder(Metadata from) {
         return newBuilder(from, false);
     }
 
     /**
      * Creates a new {@code Metadata} builder instance using the specified object as a basis.
      *
      * @param from the {@code Metadata} instance to use as a basis
      * @param forceCopy the boolean indicating if a copy should be forced
      * @return a new {@code Builder}
      */
     @Nonnull
     public static Builder newBuilder(Metadata from, boolean forceCopy) {
         return new Builder(from, forceCopy);
     }
 
     /**
      * Builder class used to create Metadata instances.
      * @see #with()
      * @see #newBuilder()
      */
     @NotThreadSafe
     public static class Builder
     {
         Metadata base;
         String namespaceUri;
         String modelEncoding;
         String modelVersion;
         String groupId;
         String artifactId;
         Versioning versioning;
         String version;
         Collection<Plugin> plugins;
 
         protected Builder(boolean withDefaults) {
             if (withDefaults) {
             }
         }
 
         protected Builder(Metadata base, boolean forceCopy) {
             this.namespaceUri = base.namespaceUri;
             this.modelEncoding = base.modelEncoding;
             if (forceCopy) {
                 this.modelVersion = base.modelVersion;
                 this.groupId = base.groupId;
                 this.artifactId = base.artifactId;
                 this.versioning = base.versioning;
                 this.version = base.version;
                 this.plugins = base.plugins;
             } else {
                 this.base = base;
             }
         }
 
         @Nonnull
         public Builder namespaceUri(String namespaceUri) {
             this.namespaceUri = namespaceUri;
             return this;
         }
 
         @Nonnull
         public Builder modelEncoding(String modelEncoding) {
             this.modelEncoding = modelEncoding;
             return this;
         }
 
         @Nonnull
         public Builder modelVersion(String modelVersion) {
             this.modelVersion = modelVersion;
             return this;
         }
 
         @Nonnull
         public Builder groupId(String groupId) {
             this.groupId = groupId;
             return this;
         }
 
         @Nonnull
         public Builder artifactId(String artifactId) {
             this.artifactId = artifactId;
             return this;
         }
 
         @Nonnull
         public Builder versioning(Versioning versioning) {
             this.versioning = versioning;
             return this;
         }
 
         @Nonnull
         public Builder version(String version) {
             this.version = version;
             return this;
         }
 
         @Nonnull
         public Builder plugins(Collection<Plugin> plugins) {
             this.plugins = plugins;
             return this;
         }
 
 
         @Nonnull
         public Metadata build() {
             // this method should not contain any logic other than creating (or reusing) an object in order to ease subclassing
             if (base != null
                     && (modelVersion == null || modelVersion == base.modelVersion)
                     && (groupId == null || groupId == base.groupId)
                     && (artifactId == null || artifactId == base.artifactId)
                     && (versioning == null || versioning == base.versioning)
                     && (version == null || version == base.version)
                     && (plugins == null || plugins == base.plugins)
             ) {
                 return base;
             }
             return new Metadata(this);
         }
 
     }
 
 }