}
  }

  @GwtIncompatible // SmallCharMatcher
  private static boolean isSmall(int totalCharacters, int tableLength) {
    return totalCharacters <= SmallCharMatcher.MAX_SIZE
        && tableLength > (totalCharacters * 4 * Character.SIZE);
    // err on the side of BitSetMatcher
  }

  /** Sets bits in {@code table} matched by this matcher. */
  @GwtIncompatible // used only from other GwtIncompatible code