code: public boolean isNative(String name)
      {
          QueryWrapper wrapper = namedNativeQueries != null && name != null ? namedNativeQueries.get(name) : null;
          return wrapper != null ? wrapper.isNativeQuery() : false;
      }
docs: Returns true, if query is named native or native, else false
  
  @param name
  mapped name.
  @return boolean value