removeOnDisposeCallback method
Implementation
void removeOnDisposeCallback(TrackEntryCallback callback) {
final int index = onDisposeCallbacks.indexOf(callback);
if (index >= 0) onDisposeCallbacks.removeAt(index);
}
void removeOnDisposeCallback(TrackEntryCallback callback) {
final int index = onDisposeCallbacks.indexOf(callback);
if (index >= 0) onDisposeCallbacks.removeAt(index);
}