code: public String skipped()
      {
          int start = 0;
          if (stack.size() > 1)
          {
              start = stack.get(stack.size() - 2).end();
          }
          int end = stack.get(stack.size() - 1).start();
          return text.subSequence(start, end).toString();
      }
docs: Returns the skipped text after successfull call to find
  @return