[Improvement] Adapters: Remove duplicate code

[EsipovPA]

Current state
It seems to me that the code in the methods __load_tree of the inotifyTree and inotifyTrees classes is being duplicated.
If I'm not being wrong, it is possible to convert this code into a method of the parent class __BaseTree and add some more parameters for child classes to call it, like debug_message.

Better way to do it?
Move duplicated code to __BaseTree class. Maybe do some refactoring.

Motivation
Better readability, easier support.

TODO?
If nobody is up to this, and nobody is against it, I'm willing to add this myself.