code: public JsonNode parse(String src) {
          synchronized (lock) {
              try {
                  return mapper.readValue(src, JsonNode.class);
              } catch (Exception t) {
                  throw new RuntimeException(t);
              }
          }
      }
docs: Parses a String representing a json, and return it as a JsonNode.
  
  @param src the JSON String
  @return the Json Node
  @throws java.lang.RuntimeException if the given string is not a valid JSON String