// =================== 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;
  
  /**
   * Versioning information for "groupId/artifactId" or "groupId/artifactId/version" SNAPSHOT
   */
  @Experimental
  @Generated @ThreadSafe @Immutable
  public class Versioning
      implements Serializable
  {
      /**
       * What the last version added to the directory is, including both releases and snapshots ("groupId/artifactId" directory only)
       */
      final String latest;
      /**
       * What the last version added to the directory is, for the releases only ("groupId/artifactId" directory only)
       */
      final String release;
      /**
       * Versions available of the artifact (both releases and snapshots) ("groupId/artifactId" directory only)
       */
      final List<String> versions;
      /**
       * When the metadata was last updated (both "groupId/artifactId" and "groupId/artifactId/version" directories). The timestamp is expressed using UTC in the format yyyyMMddHHmmss.
       */
      final String lastUpdated;
      /**
       * The current snapshot data in use for this version ("groupId/artifactId/version" only)
       */
      final Snapshot snapshot;
      /**
       * Information for each sub-artifact available in this artifact snapshot. This is only the most recent SNAPSHOT for each unique extension/classifier combination.
       */
      final List<SnapshotVersion> snapshotVersions;
  
      /**
        * Constructor for this class, to be called from its subclasses and {@link Builder}.
        * @see Builder#build()
        */
      protected Versioning(Builder builder) {
          this.latest = builder.latest != null ? builder.latest : (builder.base != null ? builder.base.latest : null);
          this.release = builder.release != null ? builder.release : (builder.base != null ? builder.base.release : null);
          this.versions = ImmutableCollections.copy(builder.versions != null ? builder.versions : (builder.base != null ? builder.base.versions : null));
          this.lastUpdated = builder.lastUpdated != null ? builder.lastUpdated : (builder.base != null ? builder.base.lastUpdated : null);
          this.snapshot = builder.snapshot != null ? builder.snapshot : (builder.base != null ? builder.base.snapshot : null);
          this.snapshotVersions = ImmutableCollections.copy(builder.snapshotVersions != null ? builder.snapshotVersions : (builder.base != null ? builder.base.snapshotVersions : null));
      }
  
      /**
       * What the last version added to the directory is, including both releases and snapshots ("groupId/artifactId" directory only)
       *
       * @return a {@code String}
       */
      public String getLatest() {
          return this.latest;
      }
  
      /**
       * What the last version added to the directory is, for the releases only ("groupId/artifactId" directory only)
       *
       * @return a {@code String}
       */
      public String getRelease() {
          return this.release;
      }
  
      /**
       * Versions available of the artifact (both releases and snapshots) ("groupId/artifactId" directory only)
       *
       * @return a {@code List<String>}
       */
      @Nonnull
      public List<String> getVersions() {
          return this.versions;
      }
  
     /**
      * When the metadata was last updated (both "groupId/artifactId" and "groupId/artifactId/version" directories). The timestamp is expressed using UTC in the format yyyyMMddHHmmss.
      *
      * @return a {@code String}
      */
     public String getLastUpdated() {
         return this.lastUpdated;
     }
 
     /**
      * The current snapshot data in use for this version ("groupId/artifactId/version" only)
      *
      * @return a {@code Snapshot}
      */
     public Snapshot getSnapshot() {
         return this.snapshot;
     }
 
     /**
      * Information for each sub-artifact available in this artifact snapshot. This is only the most recent SNAPSHOT for each unique extension/classifier combination.
      *
      * @return a {@code List<SnapshotVersion>}
      */
     @Nonnull
     public List<SnapshotVersion> getSnapshotVersions() {
         return this.snapshotVersions;
     }
 
     /**
      * 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 Versioning} instance using the specified latest.
      *
      * @param latest the new {@code String} to use
      * @return a {@code Versioning} with the specified latest
      */
     @Nonnull
     public Versioning withLatest(String latest) {
         return newBuilder(this, true).latest(latest).build();
     }
     /**
      * Creates a new {@code Versioning} instance using the specified release.
      *
      * @param release the new {@code String} to use
      * @return a {@code Versioning} with the specified release
      */
     @Nonnull
     public Versioning withRelease(String release) {
         return newBuilder(this, true).release(release).build();
     }
     /**
      * Creates a new {@code Versioning} instance using the specified versions.
      *
      * @param versions the new {@code Collection<String>} to use
      * @return a {@code Versioning} with the specified versions
      */
     @Nonnull
     public Versioning withVersions(Collection<String> versions) {
         return newBuilder(this, true).versions(versions).build();
     }
     /**
      * Creates a new {@code Versioning} instance using the specified lastUpdated.
      *
      * @param lastUpdated the new {@code String} to use
      * @return a {@code Versioning} with the specified lastUpdated
      */
     @Nonnull
     public Versioning withLastUpdated(String lastUpdated) {
         return newBuilder(this, true).lastUpdated(lastUpdated).build();
     }
     /**
      * Creates a new {@code Versioning} instance using the specified snapshot.
      *
      * @param snapshot the new {@code Snapshot} to use
      * @return a {@code Versioning} with the specified snapshot
      */
     @Nonnull
     public Versioning withSnapshot(Snapshot snapshot) {
         return newBuilder(this, true).snapshot(snapshot).build();
     }
     /**
      * Creates a new {@code Versioning} instance using the specified snapshotVersions.
      *
      * @param snapshotVersions the new {@code Collection<SnapshotVersion>} to use
      * @return a {@code Versioning} with the specified snapshotVersions
      */
     @Nonnull
     public Versioning withSnapshotVersions(Collection<SnapshotVersion> snapshotVersions) {
         return newBuilder(this, true).snapshotVersions(snapshotVersions).build();
     }
 
     /**
      * Creates a new {@code Versioning} instance.
      * Equivalent to {@code newInstance(true)}.
      * @see #newInstance(boolean)
      *
      * @return a new {@code Versioning}
      */
     @Nonnull
     public static Versioning newInstance() {
         return newInstance(true);
     }
 
     /**
      * Creates a new {@code Versioning} 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 Versioning}
      */
     @Nonnull
     public static Versioning newInstance(boolean withDefaults) {
         return newBuilder(withDefaults).build();
     }
 
     /**
      * Creates a new {@code Versioning} 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 Versioning} 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 Versioning} builder instance using the specified object as a basis.
      * Equivalent to {@code newBuilder(from, false)}.
      *
      * @param from the {@code Versioning} instance to use as a basis
      * @return a new {@code Builder}
      */
     @Nonnull
     public static Builder newBuilder(Versioning from) {
         return newBuilder(from, false);
     }
 
     /**
      * Creates a new {@code Versioning} builder instance using the specified object as a basis.
      *
      * @param from the {@code Versioning} 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(Versioning from, boolean forceCopy) {
         return new Builder(from, forceCopy);
     }
 
     /**
      * Builder class used to create Versioning instances.
      * @see #with()
      * @see #newBuilder()
      */
     @NotThreadSafe
     public static class Builder
     {
         Versioning base;
         String latest;
         String release;
         Collection<String> versions;
         String lastUpdated;
         Snapshot snapshot;
         Collection<SnapshotVersion> snapshotVersions;
 
         protected Builder(boolean withDefaults) {
             if (withDefaults) {
             }
         }
 
         protected Builder(Versioning base, boolean forceCopy) {
             if (forceCopy) {
                 this.latest = base.latest;
                 this.release = base.release;
                 this.versions = base.versions;
                 this.lastUpdated = base.lastUpdated;
                 this.snapshot = base.snapshot;
                 this.snapshotVersions = base.snapshotVersions;
             } else {
                 this.base = base;
             }
         }
 
         @Nonnull
         public Builder latest(String latest) {
             this.latest = latest;
             return this;
         }
 
         @Nonnull
         public Builder release(String release) {
             this.release = release;
             return this;
         }
 
         @Nonnull
         public Builder versions(Collection<String> versions) {
             this.versions = versions;
             return this;
         }
 
         @Nonnull
         public Builder lastUpdated(String lastUpdated) {
             this.lastUpdated = lastUpdated;
             return this;
         }
 
         @Nonnull
         public Builder snapshot(Snapshot snapshot) {
             this.snapshot = snapshot;
             return this;
         }
 
         @Nonnull
         public Builder snapshotVersions(Collection<SnapshotVersion> snapshotVersions) {
             this.snapshotVersions = snapshotVersions;
             return this;
         }
 
 
         @Nonnull
         public Versioning build() {
             // this method should not contain any logic other than creating (or reusing) an object in order to ease subclassing
             if (base != null
                     && (latest == null || latest == base.latest)
                     && (release == null || release == base.release)
                     && (versions == null || versions == base.versions)
                     && (lastUpdated == null || lastUpdated == base.lastUpdated)
                     && (snapshot == null || snapshot == base.snapshot)
                     && (snapshotVersions == null || snapshotVersions == base.snapshotVersions)
             ) {
                 return base;
             }
             return new Versioning(this);
         }
 
     }
 
 }