For a unique index, check if the given args are not used twice

        For the parameters, seen BaseIndex.check_uniqueness

def check_uniqueness(self, *args):
        """For a unique index, check if the given args are not used twice

        For the parameters, seen BaseIndex.check_uniqueness

        """
        self.get_unique_index().check_uniqueness(*self.prepare_args(args, transform=False))