using Plume.WPF.Mvvm; namespace JD.Guinness.WPF.Module.Model { public abstract class AChallenge : BindableBase, IWarnable { private string _warnings; public CustomData CustomData { get; } public string Warnings { get => _warnings; set => SetProperty(ref _warnings, value); } protected AChallenge() { CustomData = new CustomData(); } } }