* previously configured separator between each.
   */
  public final String join(Iterable<? extends @Nullable Object> parts) {
    return join(parts.iterator());
  }

  /**
   * Returns a string containing the string representation of each of {@code parts}, using the
   * previously configured separator between each.
   *
   * @since 11.0
   */

 * additional configuration, permits will be distributed at a fixed rate, defined in terms of
 * permits per second. Permits will be distributed smoothly, with the delay between individual
 * permits being adjusted to ensure that the configured rate is maintained.
 *
 * <p>It is possible to configure a {@code RateLimiter} to have a warmup period during which time
 * the permits issued each second steadily increases until it hits the stable rate.
 *

 *   <li>{@code softValues} and {@code weakValues}
 * </ul>
 *
 * <p>{@code CacheBuilderSpec} does not support configuring {@code CacheBuilder} methods with
 * non-value parameters. These must be configured in code.
 *
 * <p>A new {@code CacheBuilder} can be instantiated from a {@code CacheBuilderSpec} using {@link
 * CacheBuilder#from(CacheBuilderSpec)} or {@link CacheBuilder#from(String)}.
 *
 * @author Adam Winer

 * a regular priority queue, the methods {@link #peekLast}, {@link #pollLast} and {@link
 * #removeLast} are also provided, to act on the <i>greatest</i> element in the queue instead.
 *
 * <p>A min-max priority queue can be configured with a maximum size. If so, each time the size of
 * the queue exceeds that value, the queue automatically removes its greatest element according to

   *       {@link Futures#addCallback} throws an exception, that exception will be typically be
   *       logged by the {@link ListenableFuture} implementation, even if the thread is configured
   *       to do something different. In other cases, no code will catch the exception, and it may
   *       terminate whichever thread happens to trigger the execution.
   * </ul>
   *

  /**
   * Returns a {@code MapSplitter} which splits entries based on this splitter, and splits entries
   * into keys and values using the specified key-value splitter.
   *
   * <p>Note: Any configuration option configured on this splitter, such as {@link #trimResults},
   * does not change the behavior of the {@code keyValueSplitter}.
   *
   * <p>Example:
   *
   * <pre>{@code
   * String toSplit = " x -> y, z-> a ";

      // fired. To avoid this we substitute a placeholder service.
      logger
          .get()
          .log(
              Level.WARNING,
              "ServiceManager configured with no services.  Is your application configured"
                  + " properly?",
              new EmptyServiceManagerWarning());
      copy = ImmutableList.<Service>of(new NoOpService());
    }

  /**
   * Returns a {@code MapSplitter} which splits entries based on this splitter, and splits entries
   * into keys and values using the specified key-value splitter.
   *
   * <p>Note: Any configuration option configured on this splitter, such as {@link #trimResults},
   * does not change the behavior of the {@code keyValueSplitter}.
   *
   * <p>Example:
   *
   * <pre>{@code
   * String toSplit = " x -> y, z-> a ";

   * previously configured separator between each.
   */
  public final String join(Iterable<? extends @Nullable Object> parts) {
    return join(parts.iterator());
  }

  /**
   * Returns a string containing the string representation of each of {@code parts}, using the
   * previously configured separator between each.
   *
   * @since 11.0
   */

 *   <li>{@code softValues} and {@code weakValues}
 * </ul>
 *
 * <p>{@code CacheBuilderSpec} does not support configuring {@code CacheBuilder} methods with
 * non-value parameters. These must be configured in code.
 *
 * <p>A new {@code CacheBuilder} can be instantiated from a {@code CacheBuilderSpec} using {@link
 * CacheBuilder#from(CacheBuilderSpec)} or {@link CacheBuilder#from(String)}.
 *
 * @author Adam Winer