static async Task TestProduct()
{
var prodCtrl = new ProductsController();
var prod = new Product()
{
Id = 0, Name = "Echo Show 5", Price = 129.99m, InStock = true
};
prod = await prodCtrl.Create(prod);
prod.Price = 129.98m;
await prodCtrl.Change(prod.Id, prod);
await prodCtrl.Remove(prod.Id);
}