/// <param name='operations'>
/// The operations group for this extension method.
/// </param>
/// <param name='itemData'>
/// </param>
public static void AddListItem(this IShoppingAPI operations, Item itemData = default(Item))
{
operations.AddListItemAsync(itemData).GetAwaiter().GetResult();
}
public async Task AddItem(Item item)
{
await _client.AddListItemAsync(item);
}