code: def get_or_create_model_key(self):
          
          model_cache_info = model_cache_backend.retrieve_model_cache_info(self.model._meta.db_table)
          if not model_cache_info:
              return uuid.uuid4().hex, True
          return model_cache_info.table_key, False
docs: Get or create key for the model.
  
          Returns
          ~~~~~~~
          (model_key, boolean) tuple