SizedOverflowBox constructor

const SizedOverflowBox({Key key, @required Size size, AlignmentGeometry alignment: Alignment.center, Widget child })

Creates a widget of a given size that lets its child overflow.

The size argument must not be null.

Implementation 

const SizedOverflowBox({
  Key key,
  @required this.size,
  this.alignment = Alignment.center,
  Widget child,
}) : assert(size != null),
     assert(alignment != null),
     super(key: key, child: child);