ChatCompletionResponse

{
    "id": "chatcmpl-xxx",
    "object": "chat.completion",
    "choices": [
        {
            "message": {
                "role": "system",
                "content": "string",
                "property1": "string",
                "property2": "string"
            },
            "property1": "string",
            "property2": "string"
        }
    ],
    "property1": "string",
    "property2": "string"
}