@Contract(pure = true)
  public static int countChars(@NotNull CharSequence text, char c, int start, int end, boolean stopAtOtherChar) {
    return Strings.countChars(text, c, start, end, stopAtOtherChar);
  }
@Contract(pure = true)
  public static int countChars(@NotNull CharSequence text, char c, int start, int end, boolean stopAtOtherChar)