How to find the adjacent faces in a elem ？
 

Dear members

I want to find the adjacent faces of the current face，for examp ，in a Hexahedron elem ，the current face have 4 adjacent faces and 1 relative face，how to find 4 adjacent faces ？

I find the checkFaceFaces function ，but I donnt know how to use it， do anyone give me an examp about how to use the checkFaceFaces function ?