code: def get_or_create(self, **kwargs):
          
  
          model = self.get(**kwargs)
  
          is_created = False
  
          if model is None:
              is_created = True
              model = self._model_class()
  
              for key, value in list(kwargs.items()):
                  setattr(model, key, value)
  
          return model, is_created
docs: Looks up an object with the given kwargs, creating one if necessary.
              Returns a tuple of (object, created), where created is a boolean
              specifying whether an object was created.