import java.util.Collections;
import java.util.List;

@NonNullApi
public class DefaultTaskDestroyables implements TaskDestroyablesInternal {
    private final TaskMutator taskMutator;
    private final FileCollectionFactory fileCollectionFactory;
    private final List<Object> registeredPaths = new ArrayList<>();

    public DefaultTaskDestroyables(TaskMutator taskMutator, FileCollectionFactory fileCollectionFactory) {

                action.run()
            } else if (action instanceof Callable) {
                return action.call()
            }
        }
    }

    TaskDestroyablesInternal taskDestroys = new DefaultTaskDestroyables(
        taskMutator,
        TestFiles.fileCollectionFactory(testDir.testDirectory)
    )

    def "empty destroys by default"() {
        expect:
        taskDestroys.registeredFiles != null

import org.gradle.api.internal.project.ProjectOrderingUtil;
import org.gradle.api.internal.project.taskfactory.TaskIdentity;
import org.gradle.api.internal.tasks.DefaultTaskDependency;
import org.gradle.api.internal.tasks.DefaultTaskDestroyables;
import org.gradle.api.internal.tasks.DefaultTaskInputs;
import org.gradle.api.internal.tasks.DefaultTaskLocalState;
import org.gradle.api.internal.tasks.DefaultTaskOutputs;