public RelayServerConnectionFactory(ILogger logger, IMaintenanceLoop maintenanceLoop, IOnPremiseTargetConnectorFactory onPremiseTargetConnectorFactory, IOnPremiseInterceptorFactory onPremiseInterceptorFactory) { _logger = logger; _maintenanceLoop = maintenanceLoop ?? throw new ArgumentNullException(nameof(maintenanceLoop)); _onPremiseTargetConnectorFactory = onPremiseTargetConnectorFactory ?? throw new ArgumentNullException(nameof(onPremiseTargetConnectorFactory)); _onPremiseInterceptorFactory = onPremiseInterceptorFactory ?? throw new ArgumentNullException(nameof(onPremiseInterceptorFactory)); }