curl --request POST \
  --url https://vip.xmsmartlink.com/v1beta/models/{model}:generateContent \
  --header 'Content-Type: application/json' \
  --header 'x-goog-api-key: <api-key>' \
  --data '
{
  "contents": [
    {
      "role": "user",
      "parts": [
        {
          "text": "Hello!"
        }
      ]
    }
  ]
}
'

{
  "candidates": [
    {
      "content": {
        "role": "model",
        "parts": [
          {
            "text": "欢迎来到 xmsmartlink Docs！祝你体验顺利。"
          }
        ]
      },
      "finishReason": "STOP"
    }
  ],
  "usageMetadata": {
    "promptTokenCount": 18,
    "candidatesTokenCount": 22,
    "totalTokenCount": 40
  }
}