[flexcoders] ToggleButtonBar, NavBar and selectedIndex -> error in accessor implementation?

[florian.salihovic]

I found some weird implementation.

The inheritance hierarchie is at follows:
ToggleButtonBar -> ButtonBar -> NavBar

ToggleButtonBar overrides the accessors and mutators for _selectedIndex. But 
why is the Accessor implemented in ToggleButtonBar like:

override public function get selectedIndex():int
{
return super.selectedIndex;
//return _selectedIndex;
}

It seems like this can cause a runtime error since 2 _selectIndex fields exist: 
in ToggleButtonBar and NavBar and both are accessed.