code: def crud_permission_name(model, action, convert=True):
      
      app_label = model._meta.app_label
      model_lower = model.__name__.lower()
      if convert:
          action = MAP_PERMISSION_ACTIONS.get(action, action)
      return '%s.%s_%s' % (
          app_label,
          action,
          model_lower
      )
docs: Returns permission name using Django naming convention: app_label.action_object.
  
      If `convert` is True, `create` and `update` actions would be renamed
      to `add` and `change`.