removePostEventListener method
Remove a post-handler
Implementation
void removePostEventListener(String eventType, EventHandler postHandler) {
if (_disposed) return;
List<EventHandler>? currentHandlers = _eventPostHandlers[eventType];
if (currentHandlers != null) {
currentHandlers.remove(postHandler);
if (currentHandlers.isEmpty) {
_eventPostHandlers.remove(eventType);
}
}
}