code: def set_current_backend(cls, backend):
          "Use this method to set the backend to run the switch hooks"
          for hook in cls._backend_switch_hooks:
              hook(backend)
          cls.current_backend = backenf set_current_backend(cls, backend):
          "Use this method to set the backend to run the switch hooks"
          for hook in cls._backend_switch_hooks:
              hook(backend)
          cls.current_backend = backend
docs: Use this method to set the backend to run the switch hooks