}
            }

            int hash = 17;
            hash = hash * 31 + groupId.hashCode();
            hash = hash * 31 + artifactId.hashCode();
            hash = hash * 31 + version.hashCode();
            hash = hash * 31 + hash(workspace);
            hash = hash * 31 + localRepo.hashCode();
            hash = hash * 31 + RepositoryUtils.repositoriesHashCode(repositories);

 *
 * @since 4.0.0
 */
@Experimental
public interface ExtensibleEnum {

    /**
     * The {@code id} uniquely represents a value for this extensible enum.
     * This id should be used to compute the equality and hash code for the instance.
     *
     * @return the id
     */
    @Nonnull
    String id();

     * @since 4.0.0
     */
    public FileSource(Path path) {
        this.path = Objects.requireNonNull(path, "path cannot be null").toAbsolutePath();
        this.hashCode = Objects.hash(path);
    }

    @Override
    public InputStream getInputStream() throws IOException {
        return Files.newInputStream(path);
    }

    @Override
    public String getLocation() {

        GAKey(String groupId, String artifactId) {
            this.groupId = (groupId != null) ? groupId : "";
            this.artifactId = (artifactId != null) ? artifactId : "";

            hashCode = Objects.hash(this.groupId, this.artifactId);
        }

        @Override
        public boolean equals(Object obj) {
            if (this == obj) {
                return true;
            }

                && Objects.equals(classifier, that.classifier)
                && Objects.equals(version, that.version);
    }

    @Override
    public int hashCode() {
        return Objects.hash(groupId, artifactId, type, classifier, version);
    }

    @Override
    public String getBaseVersion() {
        if (baseVersion == null && version != null) {
            setBaseVersionInternal(version);

            int hash = 17;
            hash = hash * 31 + groupId.hashCode();
            hash = hash * 31 + artifactId.hashCode();
            hash = hash * 31 + classifier.hashCode();
            hash = hash * 31 + extension.hashCode();
            hash = hash * 31 + version.hashCode();
            hash = hash * 31 + localRepo.hashCode();
            hash = hash * 31 + repositories.hashCode();

    @Override
    public boolean equals(Object o) {
        return this == o || o instanceof PathSource ps && Objects.equals(path, ps.path);
    }

    @Override
    public int hashCode() {
        return Objects.hash(path);
    }

                        In order to create the key pair, use the command "gpg ––gen-key".
                        (–– stands for double dash)
                        -->
                        <artifactId>maven-gpg-plugin</artifactId>
                        <version>1.6</version>
                        <executions>
                            <execution>

            Key<?> key = (Key<?>) o;
            return Objects.equals(id, key.id) && Objects.equals(type, key.type);
        }

        @Override
        public int hashCode() {
            return Objects.hash(id, type);
        }
    }

                && Objects.equals(getGroupId(), that.getGroupId())
                && Objects.equals(getVersion(), that.getVersion());
    }

    @Override
    public int hashCode() {
        return Objects.hash(getGroupId(), getArtifactId(), getVersion());
    }

    public List<Extension> getBuildExtensions() {
        Build build = getBuild();
        if ((build == null) || (build.getExtensions() == null)) {