private final Provider<Map<String, String>> implementationClassById;
    private final DirectoryProperty outputDirectory;

    public GeneratePluginDescriptors() {
        ObjectFactory objectFactory = getProject().getObjects();
        declarations = objectFactory.listProperty(PluginDeclaration.class);
        outputDirectory = objectFactory.directoryProperty();
        implementationClassById = getDeclarations().map(declarations -> declarations.stream()

import org.gradle.api.Action;
import org.gradle.api.file.ConfigurableFileCollection;
import org.gradle.api.file.DirectoryProperty;
import org.gradle.api.file.RegularFile;
import org.gradle.api.provider.Provider;
import org.gradle.api.tasks.*;
import org.gradle.process.JavaForkOptions;
import org.gradle.workers.*;

import javax.inject.Inject;
import java.io.File;
import java.util.Set;

abstract public class CreateMD5 extends SourceTask {

                dirInput = null as Directory?
                dirInput = provider { null as File? }
                dirInput = provider { null as Directory? }
                dirInput = objects.directoryProperty()
                dirInput = objects.directoryProperty() as Provider<Directory>
                dirInput = file("src")
                dirInput = provider { file("src") }
                fileCollectionInput = files("a.txt")

import org.gradle.api.artifacts.ConfigurationContainer;
import org.gradle.api.attributes.AttributeContainer;
import org.gradle.api.file.ConfigurableFileCollection;
import org.gradle.api.file.DirectoryProperty;
import org.gradle.api.file.FileCollection;
import org.gradle.api.file.RegularFile;
import org.gradle.api.file.RegularFileProperty;
import org.gradle.api.internal.component.SoftwareComponentInternal;

import org.gradle.api.provider.Provider;
import org.gradle.api.tasks.*;
import org.gradle.workers.*;
import org.gradle.api.file.DirectoryProperty;

import javax.inject.Inject;
import java.io.File;

abstract public class CreateMD5 extends SourceTask {

    @OutputDirectory
    abstract public DirectoryProperty getDestinationDirectory();

    @Inject
    abstract public WorkerExecutor getWorkerExecutor(); // <1>

    @TaskAction

    @IgnoreEmptyDirectories
    @PathSensitive(PathSensitivity.RELATIVE)
    abstract ConfigurableFileCollection getScriptFiles();

    @OutputDirectory
    abstract DirectoryProperty getExtractedPluginRequestsClassesDirectory();

    @OutputDirectory
    abstract DirectoryProperty getExtractedPluginRequestsClassesStagingDirectory();

    @Internal
    abstract ListProperty<PrecompiledGroovyScript> getScriptPlugins();

    @TaskAction

 * limitations under the License.
 */

package org.gradle.kotlin.dsl.provider.plugins.precompiled.tasks

import org.gradle.api.file.DirectoryProperty

import java.io.File


internal
inline fun <T> DirectoryProperty.withOutputDirectory(action: (File) -> T): T =
    asFile.get().let { outputDir ->
        recreate(outputDir)
        action(outputDir)
    }


internal

import org.apache.commons.codec.digest.DigestUtils;
import org.apache.commons.io.FileUtils;
import org.gradle.api.file.DirectoryProperty;
import org.gradle.api.file.RegularFile;
import org.gradle.api.provider.Provider;
import org.gradle.api.tasks.OutputDirectory;
import org.gradle.api.tasks.SourceTask;
import org.gradle.api.tasks.TaskAction;
import org.gradle.workers.WorkerExecutor;

import java.io.File;
import java.io.FileInputStream;

// tag::unit-of-work[]
// The parameters for a single unit of work
interface ReverseParameters extends WorkParameters {
    RegularFileProperty getFileToReverse()
    DirectoryProperty getDestinationDir()
}

// The implementation of a single unit of work.
abstract class ReverseFile implements WorkAction<ReverseParameters> {
    private final FileSystemOperations fileSystemOperations

    @Inject

 */

package gradlebuild.docs;

import org.gradle.api.file.DirectoryProperty;
import org.gradle.api.provider.Property;

/**
 * Configuration for generating Dokka based Kotlin DSL docs.
 */
public abstract class KotlinDslReference {

    /**
     * The location of the final rendered Dokka content.
     */
    public abstract DirectoryProperty getRenderedDocumentation();

    /**