}
        // If we're still here, there was a race, so just try again.
      }
    }

    /**
     * Adds or removes occurrences of {@code element} such that the {@link #count} of the element
     * becomes {@code count}.
     *
     * @return the count of {@code element} in the multiset before this call
     * @throws IllegalArgumentException if {@code count} is negative
     */
    @Override

        }
        // If we're still here, there was a race, so just try again.
      }
    }

    /**
     * Adds or removes occurrences of {@code element} such that the {@link #count} of the element
     * becomes {@code count}.
     *
     * @return the count of {@code element} in the multiset before this call
     * @throws IllegalArgumentException if {@code count} is negative
     */
    @Override