Generics are fully supported.
Tested on:
ru.ifmo.ctddev.polyarnyi.task3.examples.AbstractClass2
ru.ifmo.ctddev.polyarnyi.task3.examples.AbstractClass
java.util.Map
java.util.AbstractList
java.util.ArrayList
ru.ifmo.ctddev.polyarnyi.task3.examples.Interface

Small fix in case of generic method.