RenderMetaData({metaData, HitTestBehavior behavior: HitTestBehavior.deferToChild, RenderBox child })

Creates a render object that hold opaque meta data.

The behavior argument defaults to HitTestBehavior.deferToChild.

Source 

RenderMetaData({
  this.metaData,
  HitTestBehavior behavior: HitTestBehavior.deferToChild,
  RenderBox child
}) : super(behavior: behavior, child: child);