inflate method

Implementation

@override
List<Widget> inflate()
{
  // sort children by depth
  if (children != null) {
    children!.sort((a, b)
  {
    if(a.depth != null && b.depth != null) return a.depth?.compareTo(b.depth!) ?? 0;
    return 0;
  });
  }
  return super.inflate();
}