code: def _apiv1_run(self, action, headers=None, **kwargs):
          
          warnings.warn(
              "POEditor API v1 is deprecated. Use POEditorAPI._run method to call API v2",
              DeprecationWarning, stacklevel=2
          )
  
          url = "https://poeditor.com/api/"
          payload = kwargs
          payload.update({'action': action, 'api_token': self.api_token})
  
          return self._make_request(url, payload, headers)
docs: Kept for backwards compatibility of this client
          See "self.clear_reference_language"