Emit an instant event for this task.
void instant(String name, {Map arguments}) {
  if (!_hasTimeline) return;
  ArgumentError.checkNotNull(name, 'name');
  Map instantArguments;
  if (arguments != null) {
    instantArguments = new Map.from(arguments);
  }
  _reportTaskEvent(_getTraceClock(), _taskId, 'n', 'Dart', name,
      _argumentsAsJson(instantArguments));
}
    © 2012 the Dart project authors
Licensed under the Creative Commons Attribution-ShareAlike License v4.0.
    https://api.dart.dev/stable/2.5.0/dart-developer/TimelineTask/instant.html