}
        }

        boolean changed;

        // If file could not be found or was not valid, start from scratch
        if (metadata == null) {
            metadata = this.metadata;

            changed = true;
        } else {
            changed = metadata.merge(this.metadata);
        }

        // beware meta-versions!

/**
 * Populates Aether {@link ArtifactDescriptorResult} from Maven project {@link Model}.
 * <p>
 * <strong>Note:</strong> This class is part of work in progress and can be changed or removed without notice.
 * @since 3.2.4
 */
public class ArtifactDescriptorReaderDelegate {
    public void populateResult(InternalSession session, ArtifactDescriptorResult result, Model model) {

 * Assists in resolving the dependencies of a plugin. <strong>Warning:</strong> This is an internal utility interface
 * that is only public for technical reasons, it is not part of the public API. In particular, this interface can be
 * changed or deleted without prior notice.
 *
 * @since 3.0
 */
public interface PluginDependenciesResolver {

    /**
     * Resolves the main artifact of the specified plugin.
     *

                changed = true;
            }
        }

        Versioning versioning = sourceMetadata.getVersioning();
        if ( versioning != null )
        {
            Versioning v = getVersioning();
            if ( v == null )
            {
                v = new Versioning();
                setVersioning( v );
                changed = true;
            }

     * same class realm is used to load build extensions and load mojos for extensions=true plugins.
     * </p>
     * <strong>Note:</strong> This is part of internal implementation and may be changed or removed without notice
     *
     * @since 3.3.0
     */
    public static final String KEY_EXTENSIONS_REALMS = DefaultMavenPluginManager.class.getName() + "/extensionsRealms";

import org.eclipse.aether.repository.RepositoryPolicy;

/**
 * <strong>Warning:</strong> This is an internal utility class that is only public for technical reasons, it is not part
 * of the public API. In particular, this class can be changed or deleted without prior notice.
 *
 */
public class ArtifactDescriptorUtils {

    public static Artifact toPomArtifact(Artifact artifact) {
        Artifact pomArtifact = artifact;

 * the projects serially, but a {@link Builder} can employ any type of concurrency model to build the projects.
 * </p>
 * <strong>Note:</strong> This interface is part of work in progress and can be changed or removed without notice.
 */
public interface Builder {
    //
    // Be nice to whittle this down to Session, maybe add task segments to the session. The session really is

/**
 * Assists in resolving the dependencies of a plugin. <strong>Warning:</strong> This is an internal utility class that
 * is only public for technical reasons, it is not part of the public API. In particular, this class can be changed or
 * deleted without prior notice.
 *
 * @since 3.0
 */
@Named
@Singleton
public class DefaultPluginDependenciesResolver implements PluginDependenciesResolver {

              <exclude>org.apache.maven.toolchain.DefaultToolchain#getLog():METHOD_RETURN_TYPE_CHANGED</exclude>
              <exclude>org.apache.maven.toolchain.DefaultToolchain#DefaultToolchain(org.apache.maven.toolchain.model.ToolchainModel,org.codehaus.plexus.logging.Logger):CONSTRUCTOR_REMOVED</exclude>

            <p><strong>Warning:</strong> This is an internal utility property that is only public for technical reasons,
            it is not part of the public API. In particular, this property can be changed or deleted without prior
            notice.</p>
            ]]>
          </description>
        </field>
        <field>
          <name>priority</name>
          <version>4.1.0+</version>