IDE: references and call hierarchy for overridden methods #2490

from typing import Protocol, override, cast

class Foo(Protocol):
    def foo(self): pass


class FooImpl(Foo):
    def foo(self): pass


def a():
    cast(Foo, None).foo() # not counted as a reference for FooImpl.foo
def b():
    cast(FooImpl, None).foo()


class Bar():
    def bar(self): pass

class BarChild(Bar):
    @override
    def bar(self): pass # not counted as a reference for FooImpl.foo

def c():
    cast(Bar, None).bar()
def d():
    cast(BarChild, None).bar()