private void NavigationHelper_LoadState(object sender, LoadStateEventArgs e)
        {
            var viewModel = (ItemViewModel)DataContext;
            var navigationParameter = (TweetDto)e.NavigationParameter;

            viewModel.Init(navigationParameter);
        }
 private async void NavigationHelper_LoadState(object sender, LoadStateEventArgs e)
 {
     var viewModel = (MainViewModel)DataContext;
     await viewModel.Init();
 }