Is it real to implement static property/method? And so, what is PROPERTY_HINT_PROPERTY_OF_SCRIPT? Sounds like thing for creating static fields, but in the engine I have found no classes using it.
PROPERTY_HINT_PROPERTY_OF_SCRIPT
Possibly I can create static field in c++ and bind to gdscript getter of it, but I want to deal with that property hint. I just noticed, that static fields exists in built-in classes only...
And Is it too hard to add class directly to the engine core?