public void ExpandOptions()
        {
            var obj = new StripeBaseOptions();

            obj.AddExpand("example1.subexample1");
            obj.AddExpand("example2");
            obj.AddExpand("example3.subexample3");

            var url = this.service.ApplyAllParameters(obj, string.Empty, false);

            Assert.Equal("?expand[]=example1.subexample1&expand[]=example2&expand[]=example3.subexample3", url);
        }