Prepare gage data for simulation

def prepare_gag(self):
        """
        Prepare gage data for simulation
        """
        if self._prepare_lsm_gag:
            self.event_manager.prepare_gag_lsm(self.lsm_precip_data_var,
                                               self.lsm_precip_type,
                                               self.precip_interpolation_type)
            self.simulation_modified_input_cards.append("PRECIP_FILE")
        else:
            log.info("Gage file preparation skipped due to missing parameters ...")