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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def substitute_any_type(self, basic_types: Set[BasicType]) -> List[Type]: """ Takes a set of ``BasicTypes`` and replaces any instances of ``ANY_TYPE`` inside this complex type with each of those basic types. """

        substitutions = []
        for first_type in substitute_any_type(self.first, basic_types):
            for second_type in substitute_any_type(self.second, basic_types):
                substitutions.append(self.__class__(first_type, second_type))
        return substitutions