code: def delete_all_renditions(self):
          '''delete all renditions and rendition dict'''
          if self.renditions:
              for r in self.renditions.values():
                  default_storage.delete(r)
              self.renditions = {f delete_all_renditions(self):
          '''delete all renditions and rendition dict'''
          if self.renditions:
              for r in self.renditions.values():
                  default_storage.delete(r)
              self.renditions = {}
docs: delete all renditions and rendition dict