@Override
    void transform(TransformOutputs outputs) {
        File gradleJars = outputs.dir("gradle-jars")
        File dependencies = outputs.dir("gradle-dependencies")
        try (ZipInputStream zin = new ZipInputStream(artifact.get().asFile.newInputStream())) {
            ZipEntry zipEntry
            while (zipEntry = zin.nextEntry) {
                String shortName = zipEntry.name

        File gradleRuntimeApiInfoJar = from.filter(file -> file.getName().startsWith(gradleApiInfoJarPrefix)).getSingleFile();
        URI uri = URI.create("jar:" + gradleRuntimeApiInfoJar.getAbsoluteFile().toURI());
        try (FileSystem fs = FileSystems.newFileSystem(uri, Collections.emptyMap())) {
            Path upgradedPropertiesJson = fs.getPath(UPGRADED_PROPERTIES_FILE);
            if (Files.exists(upgradedPropertiesJson)) {

        Charset inputEncoding = Charset.forName(getInputEncoding().get());

        File destination = getDestinationFile().get().getAsFile();
        Charset outputEncoding = Charset.forName(getOutputEncoding().get());
        try (InputStreamReader inputStream = new InputStreamReader(new FileInputStream(markdownFile), inputEncoding);
             OutputStreamWriter outputStream = new OutputStreamWriter(new FileOutputStream(destination), outputEncoding)) {

        ProtectionDomain domain = clazz.getProtectionDomain();
        CodeSource codeSource = domain.getCodeSource();
        if (codeSource != null) {
            try {
                classpath.add(new File(codeSource.getLocation().toURI()));
            } catch (URISyntaxException e) {
                // silent
            }
        }
    }

import org.jetbrains.kotlin.psi.psiUtil.collectDescendantsOfType
import java.io.File


abstract class IncubatingApiReportWorkAction : WorkAction<IncubatingApiReportParameter> {

    override fun execute() {
        try {
            val versionToIncubating = mutableMapOf<Version, MutableSet<IncubatingDescription>>()
            parameters.srcDirs.forEach { srcDir ->
                if (srcDir.exists()) {

1. Run tests.
- Run `./gradlew :<subproject>:quickTest` where `<subproject>` is the name of the subproject you've changed. 
- For example: `./gradlew :launcher:quickTest`.
2. Install Gradle locally and try out a change in behavior manually. 
- Install: `./gradlew install -Pgradle_installPath=/any/path`
- Use: `/any/path/bin/gradle taskName`.

import java.util.jar.JarEntry
import java.util.jar.JarFile


data class PluginEntry(val pluginId: String, val implementationClass: String)


fun pluginEntriesFrom(jar: File): List<PluginEntry> = try {
    JarFile(jar, false).use { jarFile ->
        jarFile.entries().asSequence().filter {
            isGradlePluginPropertiesFile(it)
        }.map { pluginEntry ->

        if (destDir.length() > 0) {
            transformer.setParameter("base.dir", destDir + "/");
        }
        FileOutputStream outstr = new FileOutputStream(dest);
        try {
            transformer.transform(new StreamSource(source), new StreamResult(outstr));
        } finally {
            outstr.close();
        }
    }

            String relativePath = adocDir.relativize(adocFile.toPath()).toString();
            File docInfo = new File(destinationDirectory, docInfoName);
            try {
                Files.write(docInfo.toPath(), Collections.singleton(String.format("<meta name=\"adoc-src-path\" content=\"%s\">", relativePath)), StandardOpenOption.CREATE);
            } catch (IOException e) {

                .let(transform)
        }

    override fun close() {
        val errors = mutableListOf<Exception>()
        openKotlinCompilationUnitsByRoot.values.forEach { unit ->
            try {
                unit.close()
            } catch (ex: Exception) {
                errors.add(ex)
            }
        }
        openJavaCompilationUnitsByFile.clear()