Return the list of functions shadowed
        Returns:
            list(core.Function)

def functions_shadowed(self):
        '''
            Return the list of functions shadowed
        Returns:
            list(core.Function)

        '''
        candidates = [c.functions_not_inherited for c in self.contract.inheritance]
        candidates = [candidate for sublist in candidates for candidate in sublist]
        return [f for f in candidates if f.full_name == self.full_name]