* ForwardingNavigableMap#navigableKeySet} to forward to this implementation or a subclass
   * thereof.
   *
   * @since 12.0
   */
  protected class StandardNavigableKeySet extends Maps.NavigableKeySet<K, V> {
    /** Constructor for use by subclasses. */
    public StandardNavigableKeySet() {
      super(ForwardingNavigableMap.this);
    }
  }

  @Override

        Matchers.strictlyEquals(new Path('file://$ROOT_DIR$/file'), new Path('file://$ROOT_DIR$/file'))
        new Path('file://$ROOT_DIR$/file') != new Path('file://$ROOT_DIR$/other')
    }

    def "equals honors subclasses"() {
        expect:
        new Path('file://$ROOT_DIR$/file') == new FilePath(null, null, 'file://$ROOT_DIR$/file', null)
    }

import java.util.concurrent.BlockingDeque;
import java.util.concurrent.TimeUnit;
import javax.annotation.CheckForNull;

/**
 * A {@link BlockingDeque} which forwards all its method calls to another {@code BlockingDeque}.
 * Subclasses should override one or more methods to modify the behavior of the backing deque as
 * desired per the <a href="http://en.wikipedia.org/wiki/Decorator_pattern">decorator pattern</a>.
 *

    private final Sync<V> sync = new Sync<V>();

    // The execution list to hold our executors.
    private final ExecutionList executionList = new ExecutionList();

    /** Constructor for use by subclasses. */
    protected OldAbstractFuture() {}

    /*
     * Improve the documentation of when InterruptedException is thrown. Our
     * behavior matches the JDK's, but the JDK's documentation is misleading.
     */

 */

package org.gradle.workers.internal;

import java.io.File;

/**
 * Represents the directories a worker needs to understand in order to execute.
 *
 * TODO: This, and its subclasses, should probably be renamed to indicate that it is only about directories (for now)
 */
public interface WorkerRequirement {
    /**
     * Returns the directory in which to execute new workers.
     *

import org.gradle.internal.operations.OperationStartEvent;

/**
 * Post-processor for {@link AbstractTaskResult} instances.
 *
 * <p>May be used to add information to results by returning specialized subclasses,
 * e.g. from internal language-specific plugins like Java.
 */
public interface OperationResultPostProcessor {
    void started(BuildOperationDescriptor buildOperation, OperationStartEvent startEvent);

 */

package org.gradle.internal.classloader;

import java.io.Serializable;

/**
 * An immutable description of a ClassLoader hierarchy that can be used to recreate the hierarchy in a different process.
 *
 * Subclasses should implement equals() and hashCode(), so that the spec can be used as a hashmap key.
 */
public abstract class ClassLoaderSpec implements Serializable {

abstract class CommonPattern {
  public abstract CommonMatcher matcher(CharSequence t);

  public abstract String pattern();

  public abstract int flags();

  // Re-declare this as abstract to force subclasses to override.
  @Override
  public abstract String toString();

  public static CommonPattern compile(String pattern) {
    return Platform.compilePattern(pattern);
  }

  public static boolean isPcreLike() {

import java.util.concurrent.BlockingDeque;
import java.util.concurrent.TimeUnit;
import javax.annotation.CheckForNull;

/**
 * A {@link BlockingDeque} which forwards all its method calls to another {@code BlockingDeque}.
 * Subclasses should override one or more methods to modify the behavior of the backing deque as
 * desired per the <a href="http://en.wikipedia.org/wiki/Decorator_pattern">decorator pattern</a>.
 *

abstract class CommonPattern {
  public abstract CommonMatcher matcher(CharSequence t);

  public abstract String pattern();

  public abstract int flags();

  // Re-declare this as abstract to force subclasses to override.
  @Override
  public abstract String toString();

  public static CommonPattern compile(String pattern) {
    return Platform.compilePattern(pattern);
  }

  public static boolean isPcreLike() {