/// <summary>
/// Refresh ViewModel items asynchronous
/// </summary>
public async Task RefreshData(bool isNetworkAvailable)
{
var refreshTasks = new Task[]
{
TheOatmealModel.RefreshItems(isNetworkAvailable),
GarfieldGarfieldModel.RefreshItems(isNetworkAvailable),
XKCDModel.RefreshItems(isNetworkAvailable),
SatMorningBreakfastCerealModel.RefreshItems(isNetworkAvailable),
NuklearPowerModel.RefreshItems(isNetworkAvailable),
};
await Task.WhenAll(refreshTasks);
}