code: private void seekNonWs(final String pattern, final ParsePosition pos) {
          int len = 0;
          final char[] buffer = pattern.toCharArray();
          do {
              len = StrMatcher.splitMatcher().isMatch(buffer, pos.getIndex());
              pos.setIndex(pos.getIndex() + len);
          } while (len > 0 && pos.getIndex() < pattern.length());
      }
docs: Consume whitespace from the current parse position.
  
  @param pattern String to read
  @param pos current position