public UpdateFlightStatusHandler(IFlightRpcClient flightRpcClient) => m_FlightRpcClient = flightRpcClient ?? throw new ArgumentNullException(nameof(flightRpcClient));
public FlightExistsHandler(IFlightRpcClient flightRpcClient) => m_FlightRpcClient = flightRpcClient ?? throw new ArgumentNullException(nameof(flightRpcClient));