}

        // second step get parameter names of all plugin goals
        Set<String> parametersNamesAll = mojoDescriptor.getPluginDescriptor().getMojos().stream()
                .flatMap(m -> m.getParameters().stream())
                .flatMap(this::getParameterNames)
                .collect(Collectors.toSet());

        unknownParameters = getUnknownParameters(mojoExecution, parametersNamesAll);

) : FunctionalTestBucketProvider {
    private val objectMapper = ObjectMapper().registerKotlinModule()
    private val buckets: Map<TestCoverage, List<BuildTypeBucket>> by lazy {
        val uuidToTestCoverage = model.stages.flatMap { it.functionalTests }.associateBy { it.uuid }
        val testCoverageAndBuckets: List<Map<String, Any>> = objectMapper.readValue(testBucketsJson.readText())
        testCoverageAndBuckets.associate { testCoverageAndBucket ->

                                                .flatMap(dm -> dm.child(DEPENDENCIES))
                                                .orElse(null),
                                        DEPENDENCY_MANAGEMENT))
                        .filter(container -> container.element != null),
                // Profile dependencies
                root.child(PROFILES).stream()
                        .flatMap(profiles -> profiles.children(PROFILE))

    reportTask {
        sources.from(kotlinMainSourceSet.sourceDirectories)
    }
}

tasks.named("check") { dependsOn(reportTask) }

consumableVariant("txt", reportTask.flatMap { it.textReportFile })
consumableVariant("html", reportTask.flatMap { it.htmlReportFile })

fun consumableVariant(reportType: String, artifact: Provider<RegularFile>) = configurations.create("incubatingReport${reportType.capitalize()}") {

        .expect("A", "B", "C", "D", "E");
  }

  public void testFlatMap() {
    SpliteratorTester.of(
            () ->
                CollectSpliterators.flatMap(
                    Arrays.spliterator(new String[] {"abc", "", "de", "f", "g", ""}),
                    (String str) -> charactersOf(str).spliterator(),

            spec.getSourceRoots().from(extension.getKotlinDslSource());
            spec.getSourceRoots().from(runtimeExtensions.flatMap(GradleKotlinDslRuntimeGeneratedSources::getGeneratedSources));
            spec.getClasspath().from(extension.getClasspath());
            spec.getClasspath().from(runtimeExtensions.flatMap(GradleKotlinDslRuntimeGeneratedSources::getGeneratedClasses));

            .flatMap { it.functionalTests }
            .filter { it.os == os && !it.testType.crossVersionTests }
            .forEach {
                buildType(FlakyTestQuarantine(model, stage, it))
            }

        model.stages
            .filter { it.stageName <= StageName.READY_FOR_RELEASE }

            task.setGroup("release notes");
            task.setDescription("Transforms generated release notes.");

            task.getHtmlFile().convention(releaseNotesMarkdown.flatMap(RenderMarkdown::getDestinationFile));
            task.getBaseCssFile().convention(extension.getReleaseNotes().getBaseCssFile());
            task.getReleaseNotesCssFile().convention(extension.getReleaseNotes().getReleaseNotesCssFile());

        }

        // Check profiles for dependencyManagement
        boolean profileChanges = root.child(PROFILES).stream()
                .flatMap(profiles -> profiles.children(PROFILE))
                .map(profile -> profile.child(DEPENDENCY_MANAGEMENT)
                        .flatMap(dm -> dm.child(DEPENDENCIES))
                        .map(deps -> removeManagedDependenciesFromSection(

        val pairs =
            durations.flatMap { scenarioDurations ->
                val scenario = Scenario.fromTestId(scenarioDurations["scenario"] as String)
                (scenarioDurations["durations"] as List<Map<String, Any>>).flatMap { duration ->
                    val testProject = duration["testProject"] as String
                    duration.entries