code: def is_all_field_none(self):
          
  
          if self._uuid is not None:
              return False
  
          if self._avatar is not None:
              return False
  
          if self._public_nick_name is not None:
              return False
  
          if self._display_name is not None:
              return False
  
          if self._country is not None:
              return False
  
          return True
docs: :rtype: bool