*/
    public void addExtension(CoreExtension coreExtension) {
        getExtensions().add(coreExtension);
    } // -- void addExtension( CoreExtension )

    /**
     * Method getExtensions.
     *
     * @return List
     */
    public List<CoreExtension> getExtensions() {
        if (this.extensions == null) {
            this.extensions = new ArrayList<CoreExtension>();
        }

    public VagrantShellTask() {
        extension = getProject().getExtensions().findByType(VagrantExtension.class);
        if (extension == null) {
            throw new IllegalStateException("elasticsearch.vagrant-base must be applied to create " + getClass().getName());
        }
        service = getProject().getExtensions().getByType(VagrantMachine.class);
    }

    @Input

        this.classpath = classpath;
    }

    @InputFiles
    @PathSensitive(PathSensitivity.RELATIVE)
    @SkipWhenEmpty
    public FileCollection getClassDirectories() {
        return getProject().getExtensions().getByType(JavaPluginExtension.class)
            .getSourceSets()
            .stream()
            // Don't pick up all source sets like the java9 ones as logger-check doesn't support the class format
            .filter(

                    (name, port) -> task.getExtensions().getByType(ExtraPropertiesExtension.class).set(name, port)
                );
            });

            maybeSkipTask(dockerSupport, preProcessFixture);
            maybeSkipTask(dockerSupport, postProcessFixture);
            maybeSkipTask(dockerSupport, buildFixture);

            ComposeExtension composeExtension = project.getExtensions().getByType(ComposeExtension.class);

        var reaperServiceProvider = GradleUtils.getBuildService(project.getGradle().getSharedServices(), ReaperPlugin.REAPER_SERVICE_NAME);
        var extension = project.getExtensions().create("vagrant", VagrantExtension.class, project);
        var service = project.getExtensions().create("vagrantService", VagrantMachine.class, extension, reaperServiceProvider);

        project.getGradle()
            .getTaskGraph()
            .whenReady(

        ProjectLayout layout = project.getLayout();
        TaskContainer tasks = project.getTasks();
        ObjectFactory objects = project.getObjects();

        GradleDocumentationExtension extension = project.getExtensions().create("gradleDocumentation", GradleDocumentationExtension.class);
        applyConventions(project, tasks, objects, layout, extension);

            @SuppressWarnings("unchecked")
            NamedDomainObjectContainer<ElasticsearchCluster> clusters = (NamedDomainObjectContainer<ElasticsearchCluster>) project
                .getExtensions()
                .getByName(TestClustersPlugin.EXTENSION_NAME);
            clusters.all(c -> {
                if (BuildParams.isInFipsJvm()) {

                            List.copyOf(new CoreExtensionsStaxReader()
                                    .read(is, true, InputSource.of(extensionsFile.toString()))
                                    .getExtensions()),
                            allowMetaVersions);
                }
            }
            return List.of();
        } catch (XMLStreamException | IOException e) {

        project.getTasks().register("buildResources", ExportElasticsearchBuildResourcesTask.class);

        // only setup tests to build
        SourceSetContainer sourceSets = project.getExtensions().getByType(SourceSetContainer.class);
        final SourceSet testSourceSet = sourceSets.create("test");

        project.getTasks().withType(Test.class).configureEach(test -> {

     }

    /**
     * Adds compiler settings to the project
     */
    public static void configureCompile(Project project) {
        project.getExtensions().getExtraProperties().set("compactProfile", "full");

        JavaPluginExtension java = project.getExtensions().getByType(JavaPluginExtension.class);
        java.setSourceCompatibility(BuildParams.getMinimumRuntimeVersion());