@staticmethod
def _get_const_multiplier(solution, dmu_code, category):
    """ Helper method that is used for writing input and output data
            to a given output.

            Args:
                solution (Solution): solution.
                dmu_code (str): DMU code.
                category (str): category name.

            Returns:
                int: always returns 1 since we don't need to scale weights.
        """
    return 1
