}

    public void merge(ArtifactMetadata metadata) {
        ProjectArtifactMetadata m = (ProjectArtifactMetadata) metadata;
        if (!m.file.equals(file)) {
            throw new IllegalStateException("Cannot add two different pieces of metadata for: " + getKey());
        }
    }

    public void merge(org.apache.maven.repository.legacy.metadata.ArtifactMetadata metadata) {

        hints.put(CHILD_DIRECTORY, childPath);
        hints.put(MavenModelMerger.CHILD_PATH_ADJUSTMENT, getChildPathAdjustment(child, parent, childPath));
        return merger.merge(child, parent, false, hints);
    }

    /**
     * Calculates the relative path from the base directory of the parent to the parent directory of the base directory

            Model lifecycleModel = Model.newBuilder()
                    .build(Build.newBuilder().plugins(allPlugins.values()).build())
                    .build();
            return merger.merge(model, lifecycleModel);
        }
    }

    private void addPlugin(Map<Plugin, Plugin> plugins, Plugin plugin) {
        Plugin cur = plugins.putIfAbsent(plugin, plugin);
        if (cur != null) {

 *
 */
public interface DependencyManagementInjector {

    /**
     * Merges default values from the dependency management section of the given model into itself.
     *
     * @param model The model into which to merge the values specified by its dependency management sections, must not
     *            be <code>null</code>.
     * @param request The model building request that holds further settings, must not be {@code null}.

      <plugin>
        <groupId>org.apache.maven.its.plugins</groupId>
        <artifactId>maven-it-plugin-a</artifactId>
        <version>1.0-SNAPSHOT</version>
        <executions>
          <execution>
            <id>merge</id>
            <phase>validate</phase>
            <goals>
              <goal>child-a</goal>
              <goal>merged</goal>
              <goal>child-b</goal>
            </goals>
          </execution>

     * parent and child completely decoupled by injecting deep copies of objects into the child rather than the original
     * objects from the parent.
     *
     * @param child The child model into which to merge the values inherited from the parent, must not be
     *            <code>null</code>.
     * @param parent The (read-only) parent model from which to inherit the values, may be <code>null</code>.

  <version>0.1</version>
  <packaging>pom</packaging>

  <name>Maven Integration Test :: MNG-3925</name>
  <description>
    Test that plugin executions (in the same phase) are properly ordered after inheritance/merge with
    parent executions.
  </description>

  <build>
    <!-- This project does not use plugin management for the test plugin -->
    <plugins>
      <plugin>

  </parent>

  <artifactId>child</artifactId>

  <name>Maven Integration Test :: MNG-3925</name>
  <description>
    Test that plugin executions (in the same phase) are properly ordered after inheritance/merge with
    parent executions.
  </description>

  <build>
    <plugins>
      <plugin>
        <groupId>org.apache.maven.its.plugins</groupId>
        <artifactId>maven-it-plugin-a</artifactId>

TRIBUTE = combine.children; public static final String CHILDREN_COMBINATION_MERGE = merge; public static final String CHILDREN_COMBINATION_APPEND = append; public static final String DEFAULT_CHILDREN_COMBINATION_MODE = merge; public static final String SELF_COMBINATION_MODE_ATTRIBUTE = combine.self; public static final String SELF_COMBINATION_OVERRIDE = override; public static final String SELF_COMBINATION_MERGE = merge; public static final String DEFAULT_SELF_COMBINATION_MODE = merge; public void...

    private ArtifactMetadata metadata;

    private boolean merged;

    public MetadataBridge(ArtifactMetadata metadata) {
        this.metadata = metadata;
    }

    public void merge(File current, File result) throws RepositoryException {
        try {
            if (current.exists()) {
                Files.createDirectories(result.toPath().getParent());