@get:Optional
    @get:Input
    val androidSdkRoot: Provider<String> = project.providers.environmentVariable("ANDROID_SDK_ROOT")

    @TaskAction
    fun warmup() {
        if (!androidHome.isPresent && !androidSdkRoot.isPresent) {
            logger.lifecycle("Skip warmning up Android home because ANDROID_HOME/ANDROID_SDK_ROOT env vars are not set.")
            return
        }
        sdkVersions.orNull.orEmpty().forEach { version ->

	// Otherwise, the metadata is corrupted.
	keyID, idPresent := metadata[MetaKeyID]
	b64KMSSealedKey, kmsKeyPresent := metadata[MetaDataEncryptionKey]
	if !idPresent && kmsKeyPresent {
		return keyID, kmsKey, sealedKey, ctx, Errorf("The object metadata is missing the internal KMS key-ID for SSE-S3")
	}
	if idPresent && !kmsKeyPresent {

        }.orElse(
            Optional.empty<T>()
        )
    }.reduce { acc, next ->
        acc.zip(next) { left, right ->
            when {
                left.isPresent -> {
                    require(!right.isPresent) {
                        "Expected at most one provider to be present"
                    }
                    left
                }
                else -> right
            }

            String fieldKey = field.getKey();
            String fieldDescription = "Configure " + fieldKey + ": " + field.getDescription();
            if (field.getOptions().isPresent()) {
                // list options
                ListPromptBuilder listPromptBuilder =
                        promptBuilder.createListPrompt().name(fieldKey).message(fieldDescription);

        return !((java.util.Optional<?>) value).isPresent();
      } else if (value instanceof OptionalInt) {
        return !((OptionalInt) value).isPresent();
      } else if (value instanceof OptionalLong) {
        return !((OptionalLong) value).isPresent();
      } else if (value instanceof OptionalDouble) {
        return !((OptionalDouble) value).isPresent();
      } else if (value instanceof Optional) {

    get() = systemProperty(BUNDLE_GROOVY_MAJOR).orNull?.toInt() ?: 4

val Project.daemonDebuggingIsEnabled: Boolean
    get() = propertyFromAnySource(DEBUG_DAEMON).isPresent

val Project.launcherDebuggingIsEnabled: Boolean

        context.indent();

        if (options.all().orElse(false)) {
            context.info("all: true (applying all available upgrades)");
        }

        if (options.modelVersion().isPresent()) {
            context.info("modelVersion: " + options.modelVersion().get());
        }

        if (options.plugins().orElse(false)) {
            context.info("plugins: true");
        }

    }

    @Internal
    protected
    fun getContributorsFromPullRequests(): Set<GitHubUser> {
        if (!milestone.isPresent) {
            error("Milestone not set: please rerun the task with `--milestone <milestone>`")
        }
        val prs: MutableList<GitHubPullRequest> = mutableListOf()
        for (page in 1..10) {

     * if applicable.
     */
    default boolean effectiveVerbose() {
        return options().isPresent() && options().orElseThrow().verbose().orElse(false)
                || ciInfo().isPresent() && ciInfo().orElseThrow().isVerbose();
    }

        }.writePlan(System.out::println, plan);

        plan.allSteps().forEach(phase -> {
            phase.predecessors.forEach(
                    pred -> assertTrue(plan.step(pred.project, pred.name).isPresent(), "Phase not present: " + pred));
        });
    }

    @Test
    void testAlias() {
        MavenProject p1 = new MavenProject();
        p1.setArtifactId("p1");
        p1.setCollectedProjects(List.of());