Outgoing constructor

*[<Null safety>](https://dart.dev/null-safety)*

Outgoing()

Implementation

Outgoing() {
  // TODO(fxbug.dev/4427): remove 'public' after transition is complete
  _root
    ..addNode('public', _public)
    ..addNode('svc', _public)
    ..addNode('debug', _debug)
    ..addNode('diagnostics', _diagnostics)
    ..addNode('ctrl', _ctrl);
}