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    {
      "content": {
        "role": "model",
        "parts": [{"text": "Hello! How can I help you today?"}]
      },
      "finishReason": "STOP"
    }
  ],
  "usageMetadata": {
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    "candidatesTokenCount": 9,
    "totalTokenCount": 17
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  "modelVersion": "gemini-2.5-pro-001",
  "responseId": "resp_ABC123"
}