Where to find prpublic.jar or equivalent in pega 8.6 or 8.7

Need to find prpublic.jar or equivalent in pega 8.6 or 8.7 for download and the creation of a class for custom deserialization of kafka data set.

@RodrigoLemeSantos You should be able to find it within the installation media at: archives\pegadbinstall-classes.zip\lib\pega\