RenderSliverPadding constructor

RenderSliverPadding({@required EdgeInsetsGeometry padding, TextDirection textDirection, RenderSliver child })

Creates a render object that insets its child in a viewport.

The padding argument must not be null and must have non-negative insets.

Implementation 

RenderSliverPadding({
  @required EdgeInsetsGeometry padding,
  TextDirection textDirection,
  RenderSliver child,
}) : assert(padding != null),
     assert(padding.isNonNegative),
     _padding = padding,
     _textDirection = textDirection {
  this.child = child;
}