thx for feedback and advices

Do you have a list of projects that make use of this library?

If you ask about process manager.
No, it was made by me recently. It is good for OOP - other abstraction layer. Process control is not main goal of this event listener and code of process manager diverts attention from business logic of lib. It is more clearly for understanding when you do not see side code.

if you ask about event listener - it is my rating.mysteemit.xyz site