*
     * <p>When {@link #executor} is a directExecutor(), the value written to
     * {@code workerRunningState} will be available synchronously, and behaviour will be
     * deterministic.
     */
    @SuppressWarnings("GuardedBy")
    boolean alreadyMarkedQueued = workerRunningState != QUEUING;
    if (alreadyMarkedQueued) {
      return;
    }

   * least one of the previous mean and the value is non-finite.
   */
  static double calculateNewMeanNonFinite(double previousMean, double value) {
    /*
     * Desired behaviour is to match the results of applying the naive mean formula. In particular,
     * the update formula can subtract infinities in cases where the naive formula would add them.
     *
     * Consequently:

 *
 * <h3>Handling of non-finite values</h3>
 *
 * <p>If any values in the input are {@link Double#NaN NaN} then all values returned are {@link
 * Double#NaN NaN}. (This is the one occasion when the behaviour is not the same as you'd get from
 * sorting with {@link java.util.Arrays#sort(double[]) Arrays.sort(double[])} or {@link
 * java.util.Collections#sort(java.util.List) Collections.sort(List&lt;Double&gt;)} and selecting

   * {@code delegate} has begun to reject execution, the previously submitted tasks may never run,
   * despite not throwing a RejectedExecutionException synchronously with the call to {@code
   * execute}. If this behaviour is problematic, use an Executor with a single thread (e.g. {@link
   * Executors#newSingleThreadExecutor}).
   *
   * @since 23.3 (since 23.1 as {@code sequentialExecutor})
   */
  @J2ktIncompatible

      COMMA_SPLITTER.withKeyValueSeparator("=").split("a=1,b,c=2");
      fail();
    } catch (IllegalArgumentException expected) {
    }
  }

  /**
   * Testing the behavior in https://github.com/google/guava/issues/1900 - this behavior may want to
   * be changed?
   */
  public void testMapSplitter_extraValueDelimiter() {
    try {
      COMMA_SPLITTER.withKeyValueSeparator("=").split("a=1,c=2=");
      fail();

      COMMA_SPLITTER.withKeyValueSeparator("=").split("a=1,b,c=2");
      fail();
    } catch (IllegalArgumentException expected) {
    }
  }

  /**
   * Testing the behavior in https://github.com/google/guava/issues/1900 - this behavior may want to
   * be changed?
   */
  public void testMapSplitter_extraValueDelimiter() {
    try {
      COMMA_SPLITTER.withKeyValueSeparator("=").split("a=1,c=2=");
      fail();

      ParameterizedType parameterizedType =
          requireNonNull((ParameterizedType) subclass.getGenericSuperclass());
      for (ClassOwnership behavior : ClassOwnership.values()) {
        if (behavior.getOwnerType(LocalClass.class) == parameterizedType.getOwnerType()) {
          return behavior;
        }
      }
      throw new AssertionError();
    }
  }

  /**

   *   Throwables.propagateIfInstanceOf(t, SQLException.class);
   *   throw Throwables.propagate(t);
   * }
   * </pre>
   *
   * @deprecated Use {@link #throwIfInstanceOf}, which has the same behavior but rejects {@code
   *     null}.
   */
  @Deprecated
  @J2ktIncompatible
  @GwtIncompatible // throwIfInstanceOf
  public static <X extends Throwable> void propagateIfInstanceOf(

   *   Throwables.propagateIfInstanceOf(t, SQLException.class);
   *   throw Throwables.propagate(t);
   * }
   * </pre>
   *
   * @deprecated Use {@link #throwIfInstanceOf}, which has the same behavior but rejects {@code
   *     null}.
   */
  @Deprecated
  @J2ktIncompatible
  @GwtIncompatible // throwIfInstanceOf
  public static <X extends Throwable> void propagateIfInstanceOf(

 * one or more methods to modify the behavior of the backing multiset as desired per the <a
 * href="http://en.wikipedia.org/wiki/Decorator_pattern">decorator pattern</a>.
 *
 * <p><b>Warning:</b> The methods of {@code ForwardingMultiset} forward <b>indiscriminately</b> to
 * the methods of the delegate. For example, overriding {@link #add(Object, int)} alone <b>will