public void TestGetPhoneNumbers()
{
var instance = new TestDocument();
Assert.IsNull(configuration.GetPhoneNumbers(instance));
configuration.HasPhoneNumbers(x => x.PhoneNumbers);
Assert.IsNull(configuration.GetPhoneNumbers(instance));
instance.Addresses = new string[] { "value" };
Assert.IsTrue(Object.ReferenceEquals(instance.PhoneNumbers, configuration.GetPhoneNumbers(instance)));
}