public void TestHasPhoneNumbers()
{
Assert.IsNull(configuration.PhoneNumbersDelegate);
configuration.HasPhoneNumbers(x => x.PhoneNumbers);
Assert.IsNotNull(configuration.PhoneNumbersDelegate);
var instance = new TestDocument();
instance.PhoneNumbers = new string[] { "value1", "value2" };
Assert.IsTrue(Object.ReferenceEquals(instance.PhoneNumbers, configuration.PhoneNumbersDelegate(instance)));
}