response_schema = {}
                operation.setdefault("responses", {}).setdefault(
                    status_code, {}
                ).setdefault("content", {}).setdefault(route_response_media_type, {})[
                    "schema"
                ] = response_schema
            if route.responses:
                operation_responses = operation.setdefault("responses", {})
                for (

        ] = {} if exception_handlers is None else dict(exception_handlers)
        self.exception_handlers.setdefault(HTTPException, http_exception_handler)
        self.exception_handlers.setdefault(
            RequestValidationError, request_validation_exception_handler
        )
        self.exception_handlers.setdefault(
            WebSocketRequestValidationError,