* should override {@code equals} as well, either providing your own implementation, or delegating
 * to the provided {@code standardEquals} method.
 *
 * <p>Each of the {@code standard} methods, where appropriate, use {@link Objects#equal} to test
 * equality for both keys and values. This may not be the desired behavior for map implementations

 *       sign {@code "+"}.
 *   <li>All other characters are converted into one or more bytes using UTF-8 encoding and each
 *       byte is then represented by the 3-character string "%XX", where "XX" is the two-digit,
 *       uppercase, hexadecimal representation of the byte value.
 * </ul>
 *
 * <p>For performance reasons the only currently supported character encoding of this class is
 * UTF-8.
 *

import javax.annotation.CheckForNull;

/**
 * Captures a free type variable that can be used in {@link TypeToken#where}. For example:
 *
 * <pre>{@code
 * static <T> TypeToken<List<T>> listOf(Class<T> elementType) {
 *   return new TypeToken<List<T>>() {}
 *       .where(new TypeParameter<T>() {}, elementType);
 * }
 * }</pre>
 *
 * @author Ben Yu
 * @since 12.0
 */
@ElementTypesAreNonnullByDefault

    manager.stopAsync();
    assertThrows(TimeoutException.class, () -> manager.awaitStopped(1, TimeUnit.MILLISECONDS));
    manager.awaitStopped(5, SECONDS); // no exception thrown
  }

  /**
   * This covers a case where if the last service to stop failed then the stopped callback would
   * never be called.
   */
  public void testSingleFailedServiceCallsStopped() {
    Service a = new FailStartService();

   * will gradually return to its "cold" state, i.e. it will go through the same warming up process
   * as when it was first created.
   *
   * <p>The returned {@code RateLimiter} is intended for cases where the resource that actually
   * fulfills the requests (e.g., a remote server) needs "warmup" time, rather than being
   * immediately accessed at the stable (maximum) rate.
   *

 */

package com.google.common.io;

/**
 * Interface for a supplier of streams that can report whether a stream was opened and whether that
 * stream was closed. Intended for use in a test where only a single stream should be opened and
 * possibly closed.
 *
 * @author Colin Decker
 */
public interface TestStreamSupplier {

  /** Returns whether or not a new stream was opened. */

 */
@GwtCompatible
@ElementTypesAreNonnullByDefault
public abstract class ForwardingList<E extends @Nullable Object> extends ForwardingCollection<E>
    implements List<E> {
  // TODO(lowasser): identify places where thread safety is actually lost

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

  @Override
  protected abstract List<E> delegate();

  @Override

      Stopwatch s = Stopwatch.createStarted();
      // here is where you would do something
      total += s.elapsed(TimeUnit.NANOSECONDS);
    }
    return total;
  }

  @Benchmark
  long manual(int reps) {
    long total = 0;
    for (int i = 0; i < reps; i++) {
      long start = System.nanoTime();
      // here is where you would do something
      total += (System.nanoTime() - start);
    }

      Stopwatch s = Stopwatch.createStarted();
      // here is where you would do something
      total += s.elapsed(TimeUnit.NANOSECONDS);
    }
    return total;
  }

  @Benchmark
  long manual(int reps) {
    long total = 0;
    for (int i = 0; i < reps; i++) {
      long start = System.nanoTime();
      // here is where you would do something
      total += (System.nanoTime() - start);
    }

   * should speed up for a while, to take advantage of these resources. This is important when the
   * rate is applied to networking (limiting bandwidth), where past underutilization typically
   * translates to "almost empty buffers", which can be filled immediately.
   *
   * On the other hand, past underutilization could mean that "the server responsible for handling