CopyWithModel mixin

Mixin that documents the copyWith pattern for models.

Models can use this mixin to indicate they follow the copyWith pattern for creating modified copies of themselves.

class MyModel with CopyWithModel implements Model {
  final int count;
  final String name;

  MyModel({this.count = 0, this.name = ''});

  MyModel copyWith({int? count, String? name}) {
    return MyModel(
      count: count ?? this.count,
      name: name ?? this.name,
    );
  }

  // ... implement init, update, view
}