Windchill 10.2 and Windchill 11.0 java API changes

Hello guys,

I need your help to understand the difference between  Java API difference between two windchill Version 10.2 and 11.0.

As I have code (windchill 11.0)for the reading structure of epmdocument, I want to know is same will work with 10.2?

Thanks in advance.