About the timing of adding one buffer to a perspective

Hello, I am experimenting with perspective recently, and I notice that the buffer created by `generate-buffer` is not added to a perspective by default. It seems only after `display-buffer`, the displayed buffer would be added to the current perspective. My problem is that I want to create a debugging/logging purpose, which is not intended to be seen when everything is fine, however, if the users feel there is something wrong, they can check the buffer to see what is going on. In this case, how can I make it visible in the current perspective without displaying it?