Chaining method refactor

[nikrou]

Hi all.
I try to refactor some chaining methods but didn't find a way. I see the following article to traverse and find a specific node.

For examples, I want to refactor :
Core::app()->auth->getOption('my_option');
in
App::auth()->getOption('my_option');
or
Core::app()->meta->getRecordSet($post);
in
App::meta()->getRecordSet($post);
auth and meta were property and becomes methods. Core:app becomes App

I can identify the static call in my code but didin't find a way to retrieve sub node for property or methods.
Any help appreciates. Thanks in advance