The final arguments as a JSON string.
The ID of the function call.
The unique ID of the server event.
The ID of the function call item.
The index of the output item in the response.
The ID of the response.
The event type, must be response.function_call_arguments.done
.
Returned when the model-generated function call arguments are done streaming. Also emitted when a Response is interrupted, incomplete, or cancelled.