*[<Null safety>](https://dart.dev/null-safety)*
void sendErrorEvent (dynamic flags, int status, InterfaceRequest request)
void sendErrorEvent( OpenFlags flags, int status, InterfaceRequest<Node> request) { if ((flags & OpenFlags.describe) != OpenFlags.$none) { final e = ErrorNodeForSendingEvent(status, _removeErrorNode, request); _errorNodes.add(e); } else { request.close(); } }