DefaultProjectDescriptor getDefaultProject();

    void setDefaultProject(DefaultProjectDescriptor defaultProject);

    @Override
    GradleInternal getGradle();

    List<IncludedBuildSpec> getIncludedBuilds();

    /**
     * The parent scope for this and all settings objects.
     *
     * Gradle runtime.
     */
    ClassLoaderScope getBaseClassLoaderScope();

    /**

        buildIncluder.registerPluginBuild(buildSpec);
        includedBuildSpecs.add(buildSpec);
    }

    @Override
    public List<IncludedBuildSpec> getIncludedBuilds() {
        return includedBuildSpecs;
    }

    private class PluginDependenciesSpecImpl implements PluginDependenciesSpec {
        @Override
        public PluginDependencySpec id(String id) {

        return result;
    }

    private static void collectAllNestedBuilds(GradleBuild buildModel, BuildController controller, Result result) {
        for (GradleBuild includedBuild : buildModel.getIncludedBuilds()) {
            if (!result.includedBuildIdeaProjects.containsKey(includedBuild)) {
                IdeaProject includedBuildProject = controller.getModel(includedBuild, IdeaProject.class);

     */
    RootBuildState getRootBuild() throws IllegalStateException;

    /**
     * Returns all included builds.
     */
    Collection<? extends IncludedBuildState> getIncludedBuilds();

    /**
     * Locates an included build by {@link BuildIdentifier}, if present. Fails if not an included build.
     */

        }
        return children;
    }

    private List<Path> calculateIncludedBuildIdentityPaths() {
        Collection<? extends IncludedBuildState> includedBuilds = getBuildStateRegistry().getIncludedBuilds();
        List<Path> includedBuildIdentityPaths = new ArrayList<>(includedBuilds.size());
        for (IncludedBuildState includedBuild : includedBuilds) {

        }
        throw new IllegalStateException("No built-in tasks available.");
    }

    private BuildState findIncludedBuild(File rootDir) {
        for (IncludedBuildState build : buildRegistry.getIncludedBuilds()) {
            if (build.getRootDirectory().equals(rootDir)) {
                return build;
            }
        }
        return null;
    }

            includedBuild = registerBuild(buildDefinition, true, null);
        }
        return includedBuild;
    }

    @Override
    public Collection<IncludedBuildState> getIncludedBuilds() {
        return includedBuildsByRootDir.values();
    }

    @Override
    public IncludedBuildState getIncludedBuild(BuildIdentifier buildIdentifier) {

    override fun useLogger(logger: Any) =
        delegate.useLogger(logger)

    override fun getSharedServices(): BuildServiceRegistry =
        delegate.sharedServices

    override fun getIncludedBuilds(): MutableCollection<IncludedBuild> =
        delegate.includedBuilds

    override fun includedBuild(name: String): IncludedBuild =
        delegate.includedBuild(name)

        return this;
    }

    @Override
    @Inject
    public abstract BuildServiceRegistry getSharedServices();

    @Override
    public Collection<IncludedBuild> getIncludedBuilds() {
        return Cast.uncheckedCast(includedBuilds());
    }

    @Override
    public void setIncludedBuilds(Collection<? extends IncludedBuildInternal> includedBuilds) {

        includedBuilds.add(includedBuild);
    }

    public void setIncludedBuilds(List<File> includedBuilds) {
        this.includedBuilds = includedBuilds;
    }

    public List<File> getIncludedBuilds() {
        return Collections.unmodifiableList(includedBuilds);
    }

    /**
     * Returns true if build scan should be created.
     *
     * @since 3.4
     */