return multiset;
  }

  /**
   * Returns a new {@code EnumMultiset} instance containing the given elements. Unlike {@link
   * EnumMultiset#create(Iterable)}, this method does not produce an exception on an empty iterable.
   *
   * @since 14.0
   */
  public static <E extends Enum<E>> EnumMultiset<E> create(Iterable<E> elements, Class<E> type) {
    EnumMultiset<E> result = create(type);

          // can't know without submitting something to the executor) so queue to run iteratively.
          // Task must be null, since each execution on this executor can only produce one more
          // execution.
          checkState(submittingTaskQueue.nextTask == null);
          submittingTaskQueue.nextTask = task;

  }

  /**
   * Returns a string that can be used to parse an equivalent {@code CacheBuilderSpec}. The order
   * and form of this representation is not guaranteed, except that reparsing its output will
   * produce a {@code CacheBuilderSpec} equal to this instance.
   */
  public String toParsableString() {
    return specification;
  }

  /**

   * should use this method over {@link #setCountCheckReturnValue(Object, int)} when they expect
   * {@code setCount()} to throw an exception, as checking the return value could produce an
   * incorrect error message like "setCount() should return the original count" instead of the
   * message passed to a later invocation of {@code fail()}, like "setCount should throw
   * UnsupportedOperationException."
   */

   * should use this method over {@link #setCountCheckReturnValue(Object, int)} when they expect
   * {@code setCount()} to throw an exception, as checking the return value could produce an
   * incorrect error message like "setCount() should return the original count" instead of the
   * message passed to a later invocation of {@code fail()}, like "setCount should throw
   * UnsupportedOperationException."
   */

              }));
    }

    /*
     * It's unlikely that any operations would fail by throwing an exception, but let's check them
     * just to be safe.
     *
     * The real purpose of this test is to produce a TSAN failure if MapIteratorCache is unsafe for
     * reads from multiple threads -- unsafe, in fact, even in the absence of a concurrent write.

              }));
    }

    /*
     * It's unlikely that any operations would fail by throwing an exception, but let's check them
     * just to be safe.
     *
     * The real purpose of this test is to produce a TSAN failure if MapIteratorCache is unsafe for
     * reads from multiple threads -- unsafe, in fact, even in the absence of a concurrent write.

 *   for (Runnable task : tasks) {
 *     rateLimiter.acquire(); // may wait
 *     executor.execute(task);
 *   }
 * }
 * }</pre>
 *
 * <p>As another example, imagine that we produce a stream of data, and we want to cap it at 5kb per
 * second. This could be accomplished by requiring a permit per byte, and specifying a rate of 5000
 * permits per second:
 *
 * <pre>{@code

   * MinMaxPriorityQueue#expectedSize(int)} or {@link MinMaxPriorityQueue#maximumSize(int)}.
   *
   * @param <B> the upper bound on the eventual type that can be produced by this builder (for
   *     example, a {@code Builder<Number>} can produce a {@code Queue<Number>} or {@code
   *     Queue<Integer>} but not a {@code Queue<Object>}).
   * @since 8.0
   */
  public static final class Builder<B> {
    /*

  }

  /**
   * Returns a string that can be used to parse an equivalent {@code CacheBuilderSpec}. The order
   * and form of this representation is not guaranteed, except that reparsing its output will
   * produce a {@code CacheBuilderSpec} equal to this instance.
   */
  public String toParsableString() {
    return specification;
  }

  /**