def ref(self) -> RefRequestBuilder:
        """
        Provides operations to manage the collection of device entities.
        """
        from .ref.ref_request_builder import RefRequestBuilder

        return RefRequestBuilder(self.request_adapter, self.path_parameters)

        Provides operations to manage the collection of device entities.
        
msgraph/generated/devices/item/registered_users/registered_users_request_builder.py