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

        return RefRequestBuilder(self.request_adapter, self.path_parameters)

        Provides operations to manage the collection of user entities.
        
msgraph/generated/users/item/managed_devices/item/device_category/device_category_request_builder.py