Catrobat.IDE.Core.ViewModels.Editor.Sprites.ChangeSpriteViewModel.ChangeSpriteViewModel C# (CSharp) Метод

        public ChangeSpriteViewModel()
        {
            SaveCommand = new RelayCommand(SaveAction, SaveCommand_CanExecute);
            CancelCommand = new RelayCommand(CancelAction);

            Messenger.Default.Register<GenericMessage<Program>>(this,
                 ViewModelMessagingToken.CurrentProgramChangedListener, CurrentProgramChangedMessageAction);
            Messenger.Default.Register<GenericMessage<Sprite>>(this, 
                ViewModelMessagingToken.CurrentSpriteChangedListener, CurrentSpriteChangedMessageAction);
            Messenger.Default.Register<GenericMessage<Program>>(this,
                 ViewModelMessagingToken.CurrentProgramChangedListener, CurrentProgramChangedAction);
        }