)
        self._flat_dependant = get_flat_dependant(self.dependant)
        self._embed_body_fields = _should_embed_body_fields(
            self._flat_dependant.body_params
        )
        self.app = websocket_session(
            get_websocket_app(
                dependant=self.dependant,
                dependency_overrides_provider=dependency_overrides_provider,