public void TestHasWebsites()
{
Assert.IsNull(configuration.WebsitesDelegate);
configuration.HasWebsites(x => x.Websites);
Assert.IsNotNull(configuration.WebsitesDelegate);
var instance = new TestDocument();
instance.Websites = new string[] { "value1", "value2" };
Assert.IsTrue(Object.ReferenceEquals(instance.Websites, configuration.WebsitesDelegate(instance)));
}