dispose method

  1. @mustCallSuper
void dispose ()
@mustCallSuper

Free up the resources associated with this ink feature.

Implementation 

@mustCallSuper
void dispose() {
  assert(!_debugDisposed);
  assert(() { _debugDisposed = true; return true; }());
  _controller._removeFeature(this);
  if (onRemoved != null)
    onRemoved();
}