public override Widget build(BuildContext context)
{
D.assert(WidgetsD.debugCheckHasDirectionality(context));
return(Positioned.directional(
textDirection: Directionality.of(context: context),
child: widget.child,
start: _start?.evaluate(animation: animation),
top: _top?.evaluate(animation: animation),
end: _end?.evaluate(animation: animation),
bottom: _bottom?.evaluate(animation: animation),
width: _width?.evaluate(animation: animation),
height: _height?.evaluate(animation: animation)
));
}