sep method
Implementation
void sep(TrDto trDto, SchemaMetaData smdSys, {WaterLineDto? waterLineDto, int? water_table_id}) {
this.trDto = trDto;
this.smdSys = smdSys;
this.waterLineDto=waterLineDto;
if(waterLineDto==null) this.waterLineDto=WaterLineDto.sep(0, null, null, water_table_id, smdSys);
}