{
   "string_output": {
      "code": 200,
      "json": { "output": "Generated text", "metadata": { "run_id": "00000000-0000-0000-0000-000000000000" } }
   },
   "message_dict_output": {
      "code": 200,
      "json": { "output": { "content": "Generated text", "type": "ai", "additional_kwargs": {} } }
   },
   "message_constructor_output": {
      "code": 200,
      "json": {
         "output": {
            "lc": 1,
            "type": "constructor",
            "id": ["langchain", "schema", "messages", "AIMessage"],
            "kwargs": { "content": "Generated text", "type": "ai" }
         }
      }
   },
   "unexpected_dict_output": {
      "code": 200,
      "json": { "output": { "error": "err val" } }
   },
   "list_output": {
      "code": 200,
      "json": { "output": ["Generated text"] }
   },
   "missing_output_key": {
      "code": 200,
      "json": { "metadata": { "run_id": "00000000-0000-0000-0000-000000000000" } }
   },
   "client_error": {
      "code": 400,
      "json": { "detail": "Bad Request" }
   },
   "server_error": {
      "code": 500,
      "json": { "detail": "Internal Server Error" }
   }
}
