Generic PPD really is generic and has no advanced options.
Grab the regular PS or PCL driver and just pull the ppd from that when it extracts and you should be able to take the file from
C:\Xerox\D95-125CP_5.303.15.0_PS_32_Driver.inf
I am looking for newest PPD driver for D-series machine with integrated print server which supports C/Z fold option.
On the web page I found GMAH_Win-PPD_5.310.0.0_English driver but that option is not available.