* unprefixed expressions.
         * @param possiblePrefixes The possible prefixes.
         * @param root The root of the graph.
         * @param allowUnprefixedExpressions if we allow undefined expressions or not.
         */
        public PrefixedObjectValueSource(
                List<String> possiblePrefixes, Object root, boolean allowUnprefixedExpressions) {

     * during metadata retrieval.
     */
    int VALIDATION_LEVEL_MINIMAL = 0;

    /**
     * Denotes validation as performed by Maven 2.0. This validation level is meant as a compatibility mode to allow
     * users to migrate their projects.
     */
    int VALIDATION_LEVEL_MAVEN_2_0 = 20;

    /**
     * Denotes validation as performed by Maven 3.0. This validation level is meant for existing projects.
     */

          <description>
            The configurator type to use when injecting parameter values into this Mojo. The value is normally deduced
            from the Mojo's implementation language, but can be specified to allow a custom ComponentConfigurator
            implementation to be used.
          </description>
        </field>
        <field>
          <name>composer</name>
          <version>1.0.0/1.1.0</version>

import org.apache.maven.settings.v4.SettingsMerger;

/**
 * Several convenience methods to handle settings
 *
 */
public final class SettingsUtilsV4 {

    private SettingsUtilsV4() {
        // don't allow construction.
    }

    /**
     * @param dominant
     * @param recessive
     */
    public static Settings merge(Settings dominant, Settings recessive) {

    private List<String> pluginGroups;

    private boolean isProjectPresent = true;

    // ----------------------------------------------------------------------------
    // We need to allow per execution user and global settings as the embedder
    // might be running in a mode where it's executing many threads with totally
    // different settings.

                }
                addPathElement(type, info.getKey());
                // There is usually no more than one element, but nevertheless allow multi-modules.
            }
            /*
             * If the dependency has no module information, search for an artifact of the same groupId

        }
    }

    /**
     * Ensures the last updated timestamp of the specified metadata does not refer to the future and fixes the local
     * metadata if necessary to allow proper merging/updating of metadata during deployment.
     */
    private void fixTimestamp(File metadataFile, Metadata metadata, Metadata reference) {
        boolean changed = false;