It's a good intention if you want to separate your code in logical units and split it into multiple methods, but could you please stop handing the control flow through about 20 methods before even really starting with the actual logic? This mess is 10 times as long as it needs to be, because someone decided to make everything go through 10 "validate one little thing" methods for every method with actual logic!
Edit: DevRant didn't allow me to post first, now I've analysed the code a bit more and the control flow actually goes out of a specialised class into a generalised class and back (not by returning, but by calling the specialised class from the general one) and the parameter that says what specialised class to call gets written into a class variable, then read from there and passed as a method argument, then back into another class variable, then the code changes it up a bit as a local variable, then passses it as a method parameter again... First it seemed like it knew what class to call using black magic, but no, it actually just hid the fact really well that it did in fact pass the class reference through in multiple forms from beginning to end.