code: public static <V> String printNodeTree(ParsingResult<V> parsingResult) {
          checkArgNotNull(parsingResult, "parsingResult");
          return printNodeTree(parsingResult, Predicates.<Node<V>>alwaysTrue(), Predicates.<Node<V>>alwaysTrue());
      }
docs: Creates a readable string represenation of the parse tree in the given {@link ParsingResult} object.
  
  @param parsingResult the parsing result containing the parse tree
  @return a new String