removeOnEventCallback method
Implementation
void removeOnEventCallback(TrackEntryEventCallback callback) {
final int index = onEventCallbacks.indexOf(callback);
if (index >= 0) onEventCallbacks.removeAt(index);
}
void removeOnEventCallback(TrackEntryEventCallback callback) {
final int index = onEventCallbacks.indexOf(callback);
if (index >= 0) onEventCallbacks.removeAt(index);
}