Where is FlightModeManager::main() method defined and implemented?

Hi guys,

Where is FlightModeManager::main() method defined and implemented?

FlightModeManager::main(argc, argv)

624 extern "C" __EXPORT int flight_mode_manager_main(int argc, char *argv[])
625 {
626     return FlightModeManager::main(argc, argv);
627 }

OK, I got it from ModuleBase class.