* by concurrently running mojo executions. To prevent race conditions, an aggregating execution will block
     * all other executions until finished.
     * We also lock on a given project to forbid a forked lifecycle to be executed concurrently with the project.
     * TODO: ideally, the builder should take care of the ordering in a smarter way
     * TODO: and concurrency issues fixed with MNG-7157
     */

        writer.accept("=== PROJECT BUILD PLAN ================================================");
        writer.accept("Project:                     " + getKey(project));
        writer.accept("Repositories (dependencies): " + project.getRemoteProjectRepositories());
        writer.accept("Repositories (plugins):      " + project.getRemotePluginRepositories());

        Optional<BuildStep> planStep = plan.step(project, BuildStep.PLAN);

public class RestTestPlugin implements Plugin<Project> {
    private final List<String> REQUIRED_PLUGINS = Arrays.asList("elasticsearch.build", "elasticsearch.standalone-rest-test");

    @Override
    public void apply(final Project project) {
        if (REQUIRED_PLUGINS.stream().noneMatch(requiredPlugin -> project.getPluginManager().hasPlugin(requiredPlugin))) {
            throw new InvalidUserDataException(

        setupRestResources([apiCore1, apiCore2, apiXpack], [coreTest], [xpackTest])
        // intentionally not adding tests to project, they will be copied over via the plugin
        // this tests that the test copy happens before the api copy since the api copy will only trigger if there are tests in the project

        when:
        def result = gradleRunner("copyRestApiSpecsTask").build()

        then:

    @Nonnull
    public Map<String, String> getProperties(@Nonnull Project project) {
        return Collections.unmodifiableMap(
                new PropertiesAsMap(getMavenProject(project).getProperties()));
    }

    @Override
    @Nonnull
    public Optional<Project> getExecutionProject(@Nonnull Project project) {
        // Session keep tracks of the Project per project id,

) : Project({
        id("${model.projectId}_Stage_${stage.stageName.id}_SmokeTest")
        uuid = "${DslContext.uuidPrefix}_${model.projectId}_Stage_${stage.stageName.uuid}_SmokeTest"
        name = "Smoke Test"
        description = "Smoke tests against third-party plugins, Gradle build, and IDE sync"
    }) {
    init {
        smokeBuildTypes.forEach(this::buildType)
    }

    companion object {

    }

    private MavenProject createMavenProject(String groupId, String artifactId) {
        MavenProject project = new MavenProject();
        project.setGroupId(groupId);
        project.setArtifactId(artifactId);
        return project;
    }

    static String stripAnsiCodes(String msg) {
        return msg.replaceAll("\u001b\\[[;\\d]*[ -/]*[@-~]", "");
    }

    @Override
    public void apply(Project project) {
        project.getPlugins().apply(BasePlugin.class);
        registerAndConfigureDistributionArchivesExtension(project);
        registerEmptyDirectoryTasks(project);
        configureGeneralTaskDefaults(project);
        configureTarDefaults(project);
    }

    private void registerAndConfigureDistributionArchivesExtension(Project project) {

        require(project.path == ":") { "Must be applied to root project first, now: ${project.path}" }
        parameters.rootBuildDir.set(project.layout.buildDirectory)
    }
    if (project.path == ":") {
        project.gradle.serviceOf<BuildEventsListenerRegistry>().onTaskCompletion(testFilesCleanupServiceProvider)
        project.gradle.taskGraph.whenReady {

Use `Objects.requireNonNull` statement or `Preconditions` rather than `assert` or `@SuppressWarning` annotation to suppress if possible.

For gradual adoption, enable checks project-by-project.
Do not rely on `@NullMarked` annotations.
Only enable checks for a project if all its dependencies have checks enabled, in order to avoid back-and-forth when refining the annotations.