/// <summary>
/// The add to view model.
/// </summary>
/// <param name="sender">
/// The sender.
/// </param>
/// <param name="args">
/// The args.
/// </param>
private void AddToViewModel(object sender, HistoryPushEventArgs args)
{
this._viewModel.Add(HistoryViewModel.FromHistoryLocation(args.Change, new MockFaviconCache()));
}