*[<Null safety>](https://dart.dev/null-safety)*
void connectToServiceByNameWithChannel (String? serviceName, Channel? channel)
void connectToServiceByNameWithChannel( String? serviceName, Channel? channel) { if (serviceName == null) { throw Exception( 'serviceName must not be null. Check the FIDL file for a missing ' '[Discoverable]'); } if (channel == null) { throw ArgumentError.notNull('channel'); } if (_dirProxy.ctrl.isUnbound) { throw IncomingStateException( 'The directory must be bound before trying to connect to a service. ' 'See [Incoming.request] for more information'); } // connection flags for service: can read & write from target object. final OpenFlags _openFlags = OpenFlags.rightReadable | OpenFlags.rightWritable; // 0755 const int _openMode = 0x1ED; _dirProxy.open( _openFlags, _openMode, serviceName, InterfaceRequest<Node>(channel)); }