peft provides the position of the model input?

[ciaoyizhen]

I went to the official repository of the ChatGLM fine-tuning code, and I asked them why position was not provided for the model. Their reply was that peft provided position, so it is no longer needed. Then I saw the following code in peft's code

         if kwargs.get("position_ids", None) is not None:
             warnings.warn("Position ids are not supported for parameter efficient tuning. Ignoring position ids.")
             kwargs["position_ids"] = None

It seems that it will process the position, but I looked at the code and didn't understand how it generated the position and provided it to the model.
Help, thank you