: synthetic handwritten OpenAI-style usage-only frame example

data: {"id":"chatcmpl-example-usage-only","object":"chat.completion.chunk","choices":[{"index":0,"delta":{"role":"assistant","content":"{\"name\":\"Demo\",\"count\":2}"},"finish_reason":null}]}

data: {"id":"chatcmpl-example-usage-only","object":"chat.completion.chunk","choices":[{"index":0,"delta":{},"finish_reason":"stop"}]}

data: {"id":"chatcmpl-example-usage-only","object":"chat.completion.chunk","usage":{"prompt_tokens":8,"completion_tokens":6,"total_tokens":14},"choices":[]}

data: [DONE]