code: public Json removePadding(String padding) {
          String text = getFirstSourceText();
          XTokenQueue tokenQueue = new XTokenQueue(text);
          tokenQueue.consumeWhitespace();
          tokenQueue.consume(padding);
          tokenQueue.consumeWhitespace();
          String chompBalanced = tokenQueue.chompBalancedNotInQuotes('(', ')');
          return new Json(chompBalanced);
      }
docs: remove padding for JSONP
  @param padding padding
  @return json after padding removed