I would like to understand what is the idrc_PNGA and idrc_PNGD folders inside of .InDesignPlugin files on Mac. Are these part of standard structure of .InDesign plugins? An additional question I have is about immutability of .idrc files inside of this folder. Is idrc_PNGA an appropriate folder to dynamically modify the .idrc files from within our plugin logic with updated .png images or is there another folder in here somewhere that is appropriate for such intent. Also, given that the plugins are signed and notarized before shipment, it certainly does not feel right to update these sub folders dynamically, but I am not an expert and hence not sure.