add.forEach((name, node) -> org.merge(name, node, this::merge));
        return org;
    }

    private BuildStep merge(BuildStep node1, BuildStep node2) {
        node1.predecessors.addAll(node2.predecessors);
        node1.successors.addAll(node2.successors);
        node2.mojos.forEach((k, v) -> node1.mojos.merge(k, v, this::mergeMojos));
        return node1;
    }

        <artifactId>default</artifactId>
        <version>3.0</version>
        <configuration>
          <defaults><!-- equivalent to combine.children="merge" combine.self="merge" -->
            <!-- merge the content of the configuration element according to element name -->
            <parent>child</parent>
            <child>child</child>
            <parent-only>parent</parent-only>

	combined := Mask(atomic.LoadUint64(&ps.types))
	combined.Merge(Mask(mask.Mask()))
	atomic.StoreUint64(&ps.types, uint64(combined))

	go func() {
		<-doneCh

		ps.Lock()
		defer ps.Unlock()
		var remainTypes Mask
		for i, s := range ps.subs {
			if s == sub {
				ps.subs = append(ps.subs[:i], ps.subs[i+1:]...)
			} else {
				remainTypes.Merge(s.types)
			}
		}

    ProjectBuildingRequest setRepositorySession(RepositorySystemSession repositorySession);

    /**
     * Sets the merge mode used to combine repositories declared in the POM with the repositories specified in this
     * request.
     *
     * @param mode The repository merge mode, must not be {@code null}.
     * @return This request for chaining, never {@code null}.
     * @see #setRemoteRepositories(List)
     */

      pull-requests: write
    runs-on: ubuntu-latest
    steps:
      - name: Check if PRs have merge conflicts
        uses: eps1lon/actions-label-merge-conflict@v3
        with:
          dirtyLabel: "conflicts"
          repoToken: "${{ secrets.GITHUB_TOKEN }}"

     *
     * @return the filename
     */
    String getRemoteFilename();

    /**
     * Merge a new metadata set into this piece of metadata.
     * TODO this should only be needed on the repository metadata {@link org.apache.maven.artifact.metadata.ArtifactMetadata}
     *
     * @param metadata the new metadata
     */
    void merge(ArtifactMetadata metadata);

    /**
     * Store the metadata in the local repository.

    /**
     * Ensures that all list-merge methods are overridden
     */
    @Test
    void testOverriddenMergeMethods() {
        List<String> methodNames = Stream.of(MavenMerger.class.getDeclaredMethods())
                .filter(m -> m.getName().startsWith("merge"))
                .filter(m -> {
                    String baseName = m.getName().substring(5 /* merge */);

        result.setLocations(locations);

        return result;
    } // -- InputLocation merge( InputLocation, InputLocation, boolean )

    /**
     * Method merge.
     *
     * @param target
     * @param indices
     * @param source
     * @return InputLocation
     */
    public static InputLocation merge(
            InputLocation target, InputLocation source, java.util.Collection<Integer> indices) {

        _ * classDoc.classExtensions >> []
        _ * classDoc.subClasses >> []

        when:
        def result = parse('<chapter/>', document)
        withCategories {
            renderer.merge(classDoc, result)
        }

        then:
        formatTree(result) == '''<chapter>
    <section>
        <title>Properties</title>
        <table>
            <title>Properties - Class</title>

              <include>org.apache.maven.toolchain.merge</include>
            </includes>
            <excludes>
              <!--              <exclude>org.apache.maven.toolchain.building.DefaultToolchainsBuilder#DefaultToolchainsBuilder():CONSTRUCTOR_REMOVED</exclude>-->