instant method
Emit an instant event for this task.
Implementation
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));
}