[nem-en] find all the calls to some method

[Kamil Dworakowski]

I am working on a set of AOP macros, and would like to implement 
advising calls. To implement execution I am traversing all the methods 
in the WithTypedMembers phase when all the method bodies are not yet 
typed. However, In order to find all the calls to some method I need to 
traverse and modify TExpr of each and every body in the current 
compilation. Is this possible with the current API and if so then how?

Kamil Dworakowski