usage info not shown in streaming

[sophiamyang]

usage info is supposed to show in the last chunk of streaming. But it didn't show.

client = MistralClient(api_key=api_key)

messages = [
    ChatMessage(role="user", content="What is the best French cheese?")
]

# With streaming
stream_response = client.chat_stream(model=model, messages=messages)

for chunk in stream_response:
    print(chunk.usage)