Update relation of shadowing

[jecisc]

I created a relation one to one for shadowing but here I'm updating it to be a one to many relation.

It is possible that a single entity gets shadowed multiple times. Example in python:

def function_with_local_of_same_name(init):
    if init > 10:
        return init


    function_with_local_of_same_name = init
    #function_with_local_of_same_name = function_with_local_of_same_name(1)
    return function_with_local_of_same_name + 3


print(function_with_local_of_same_name(0))

def function_with_local_of_same_name(init):
    return init

The function get shadowed once by a temporary and a second time by an other function