ChatCompletionChoice

{
    "index": 0,
    "message": {
        "content": "string",
        "role": "string",
        "tool_calls": [
            {
                "type": "string",
                "function": {
                    "name": "string",
                    "arguments": "string"
                },
                "id": "string"
            }
        ]
    },
    "finish_reason": "string"
}