* evaluation and signaling of conditions. Signaling is entirely <a
 * href="http://en.wikipedia.org/wiki/Monitor_(synchronization)#Implicit_signaling">implicit</a>. By
 * eliminating explicit signaling, this class can guarantee that only one thread is awakened when a
 * condition becomes true (no "signaling storms" due to use of {@link
 * java.util.concurrent.locks.Condition#signalAll Condition.signalAll}) and that no signals are lost

      }
    }
  }

  /**
   * Invokes {@code condition.}{@link Condition#await(long, TimeUnit) await(timeout, unit)}
   * uninterruptibly.
   *
   * @since 23.6
   */
  @J2ktIncompatible
  @GwtIncompatible // concurrency
  @SuppressWarnings("GoodTime") // should accept a java.time.Duration
  public static boolean awaitUninterruptibly(Condition condition, long timeout, TimeUnit unit) {
    boolean interrupted = false;

   * Causes this thread to call the named method, and asserts that this thread thereby waits on the
   * given condition-like object. The lock-like object must have a method equivalent to {@link
   * java.util.concurrent.locks.ReentrantLock#hasWaiters(java.util.concurrent.locks.Condition)},
   * except that the method parameter must accept whatever condition-like object is passed into this
   * method.
   */

   * Causes this thread to call the named method, and asserts that this thread thereby waits on the
   * given condition-like object. The lock-like object must have a method equivalent to {@link
   * java.util.concurrent.locks.ReentrantLock#hasWaiters(java.util.concurrent.locks.Condition)},
   * except that the method parameter must accept whatever condition-like object is passed into this
   * method.
   */

    awaitUninterruptibly(latch);
    return thread;
  }

  private static class TestCondition implements Condition {
    private final Lock lock;
    private final Condition condition;

    private TestCondition(Lock lock, Condition condition) {
      this.lock = lock;
      this.condition = condition;
    }

    static TestCondition createAndSignalAfter(long delay, TimeUnit unit) {

            public OptionalEntity<Map<String, Object>> getDocument(final String index,
                    final SearchCondition<SearchRequestBuilder> condition) {
                final SearchRequestBuilder builder = new SearchRequestBuilder(this, SearchAction.INSTANCE);
                condition.build(builder);
                resultMap.put("index", index);
                resultMap.put("query", builder.toString());

    awaitUninterruptibly(latch);
    return thread;
  }

  private static class TestCondition implements Condition {
    private final Lock lock;
    private final Condition condition;

    private TestCondition(Lock lock, Condition condition) {
      this.lock = lock;
      this.condition = condition;
    }

    static TestCondition createAndSignalAfter(long delay, TimeUnit unit) {

    @FunctionalInterface
    public interface ConditionOptionCall<OP extends AbstractAggregationBuilder<?>> {

        /**
         * @param op The option of condition to be set up. (NotNull)
         */
        void callback(OP op);
    }

    @FunctionalInterface
    public interface OperatorCall<CA extends EsAbstractConditionAggregation> {

        //
        // Note that there is a race condition here which can result in missing
        // a cyclic edge: it's possible for two threads to simultaneous find
        // "safe" edges which together form a cycle. Preventing this race
        // condition efficiently without _introducing_ deadlock is probably
        // tricky. For now, just accept the race condition---missing a warning

      return delegate;
    }

    @Override
    public Condition newCondition() {
      return new WeakSafeCondition(delegate.newCondition(), strongReference);
    }
  }

  /** Condition object that ensures a strong reference is retained to a specified object. */
  private static final class WeakSafeCondition extends ForwardingCondition {
    private final Condition delegate;

    @SuppressWarnings("unused")