@staticmethod
def _mutate_label(label: str) ->str:
    """
        Most engines support mixed case aliases that can include numbers
        and special characters, like commas, parentheses etc. For engines that
        have restrictions on what types of aliases are supported, this method
        can be overridden to ensure that labels conform to the engine's
        limitations. Mutated labels should be deterministic (input label A always
        yields output label X) and unique (input labels A and B don't yield the same
        output label X).

        :param label: Preferred expression label
        :return: Conditionally mutated label
        """
    return label
