code: public boolean ok() {
          Object okValue = get("ok");
          if (okValue instanceof Boolean) {
              return (Boolean) okValue;
          } else if (okValue instanceof Number) {
              return ((Number) okValue).intValue() == 1;
          } else {
              return false;
          }
      }
docs: Gets the "ok" field, which is whether this command executed correctly or not.
  
  @return true if the command executed without error.