outerBuilder property

OuterBuilder? outerBuilder

final

a builder for re wrap child,If you need to change the boxExtent or background,padding etc.you need outerBuilder to reWrap child example:

outerBuilder:(child){
   return Container(
      color:Colors.red,
      child:child
   );
}

In this example,it will help to add backgroundColor in indicator

Implementation

final OuterBuilder? outerBuilder;