I need to obtain prompt_token and perfection_token. How can I modify the source code to obtain this information?

[lichao4Java]

How to obtain the tokens consumption of a model through api/search API access, such as using an openai model, and how to obtain the model token consumed by a single request, such as:

"usage": {
"prompt_tokens": 13,
"completion_tokens": 7,
"total_tokens": 20,
"completion_tokens_details": {
"reasoning_tokens": 0,
"accepted_prediction_tokens": 0,
"rejected_prediction_tokens": 0
}
}

I need to obtain prompt_token and perfection_token. How can I modify the source code to obtain this information?