class Foo : IInterface {}

Public Property Get Self() As Employee
    Set Self = Me
End Property

        await Task.WhenAll(
        Enumerable.Range(1, pages)
            .Select(page =>
                _request.RequestItemsAsync(args, ShopifyAPI.MaxItems, page)
                .ContinueWith(async t =>
                {
                    await Task.WhenAll(t.Result.Items.Select(item => Repository.InsertUpdateAsync(item)));
                })).ToArray());

        var lastUpdated = await _timestamps.GetLastUpdatedTimestamp(Resource);
        var args = new UpdatableCommandArgs(lastUpdated);
        var count = (await _request.RequestItemCountAsync(args)).Count;
        var pages = PageCount(count);

        await Task.WhenAll(Enumerable.Range(1, pages)
            .Select(page =>
                _request.RequestItemsAsync(args, ShopifyAPI.MaxItems, page)
                .ContinueWith(async t =>
                {
                    await Task.WhenAll(t.Result.Items.Select(item => Repository.InsertUpdateAsync(item)));
                })
            ).ToArray()
        );

 await Task.WhenAll(UpdateShopifyStorageAsync(t.Result.Items));

    protected override async Task UpdateShopifyStorageAsync(IEnumerable<Order> entities)
    {
        await Task.WhenAll(
            from order in entities
            let cmd = new TransactionsCommand(order.ShopifyId, _trxRequest, _trxRepository)
            select Repository.InsertUpdateAsync(order)
                             .ContinueWith(t => cmd.UpdateShopifyStorageAsync())
        );
    }