off<T extends Event> method
Implementation
bool off<T extends Event>({String? type, EventCallback<T>? callback}) {
var removed = false;
for (final listener in listeners.where(
(listener) =>
listener.matches<T>(type: type, protected: false) ||
(callback != null && listener.alias == callback),
)) {
removed = listener.cancel() || removed;
}
return removed;
}