public CloudTabItem(CloudTabViewModel viewModel)
        {
            _viewModel = viewModel;

            Content = new CloudView { DataContext = ForView.Wrap(_viewModel.Content) };

            _depHeader = new Dependent(() => Header = _viewModel.Header);
            _depHeader.Invalidated += () => Deployment.Current.Dispatcher.BeginInvoke(() => _depHeader.OnGet());
            _depHeader.Touch();
        }
        public CloudTabItem(CloudTabViewModel viewModel)
        {
            _viewModel = viewModel;

            Content = new CloudView {
                DataContext = ForView.Wrap(_viewModel.Content)
            };

            _depHeader              = new Dependent(() => Header = _viewModel.Header);
            _depHeader.Invalidated += () => Deployment.Current.Dispatcher.BeginInvoke(() => _depHeader.OnGet());
            _depHeader.Touch();
        }