public void ToXml_MerchantAccountIdIncludedIn()
{
SubscriptionSearchRequest request = new SubscriptionSearchRequest().MerchantAccountId.IncludedIn("abc", "def");
var xml = "<search><merchant-account-id type=\"array\"><item>abc</item><item>def</item></merchant-account-id></search>";
Assert.AreEqual(xml, request.ToXml());
}