I needed a specific information from the pagesetter database, but I was not able to find an API function that would return that data. So I had to reactivate my PHP knowledge and write my own API function.
I thought it had to attach it to the pnuserapi.php to make it work. But is also possible to create a file with the name of the function in a folder with the name of the API. In this case it was pagesetter/pnuserapi/getListItemByID.php
Is this cool? I hope they find a place for such additions in the theme folder for .8, so that I do not have to store my customizations inside some module folder that will be deleted completely on every update.