selectionRadius property Null safety

double selectionRadius
@Deprecated('Use selectionRadius property in SfDateRangePicker'), final

The radius for the SfDateRangePicker selection circle in month view.

Defaults to null.

Note: This only applies if the DateRangePickerSelectionMode is set to

Widget build(BuildContext context) {
   return MaterialApp(
     home: Scaffold(
       body: SfDateRangePicker(
         controller: _pickerController,
         view: DateRangePickerView.month,
         selectionMode: DateRangePickerSelectionMode.range,
             DateRangePickerMonthViewSettings(selectionRadius: 20),


@Deprecated('Use selectionRadius property in SfDateRangePicker')
final double selectionRadius;