Trace functions?

Before we have been using NewRelic, and we want to change to Elastic APM.
I don't know if I am missing something in my setup, or that I have misunderstood how to get things like function traces (now I only get queries to mysql), or if things are still so much in development so I can't get the things I want.

So - is it possible to get all functions calls with Elastic APM?