docs: public static int skipLeadingAsciiWhitespace(String input, int pos, int limit) {
      for (int i = pos; i < limit; i++) {
        switch (input.charAt(i)) {
          case '\t':
          case '\n':
          case '\f':
          case '\r':
          case ' ':
            continue;
          default:
            return i;
        }
      }
      return limit;
    }