streaming: why ChatCompletionAccumulator.JustFinishedToolCall only handle first Choice?

[liuzengh]

what about other choices? I'm a little confused and hope to get an answer.

func (acc *ChatCompletionAccumulator) JustFinishedToolCall() (toolcall FinishedChatCompletionToolCall, ok bool) {
	if acc.justFinished.state == toolResponseState {
		f := acc.Choices[0].Message.ToolCalls[acc.justFinished.index].Function
		id := acc.Choices[0].Message.ToolCalls[acc.justFinished.index].ID
		return FinishedChatCompletionToolCall{
			ID:    id,
			Index: acc.justFinished.index,
			ChatCompletionMessageToolCallFunction: ChatCompletionMessageToolCallFunction{
				Name:      f.Name,
				Arguments: f.Arguments,
			},
		}, true
	}
	return FinishedChatCompletionToolCall{}, false
}

[liuzengh]

@jacobzim-stl Could you spare some time to help answer this question?