flutter_my_future_nullable_builder.dart

import 'package:evtrip/utils/my_future_builder.dart';
import 'package:flutter/widgets.dart';

class MyFutureNullableBuilder extends StatelessWidget {
  final Future<bool> future;
  final AsyncWidgetBuilder<bool> builder;

  MyFutureNullableBuilder({
    Key key,
    Future<dynamic> future,
    @required this.builder,
  })  : assert(builder != null),
        future = future.then((value) => true),
        super(key: key);

  @override
  Widget build(BuildContext context) {
    return MyFutureBuilder(
      future: future,
      builder: builder,
    );
  }
}