code: def is_all_field_none(self):
          
  
          if self._user_alias_created is not None:
              return False
  
          if self._status is not None:
              return False
  
          if self._sub_status is not None:
              return False
  
          if self._expiration is not None:
              return False
  
          if self._draft_share_url is not None:
              return False
  
          if self._api_key is not None:
              return False
  
          if self._id_ is not None:
              return False
  
          return True
docs: :rtype: bool