public void TestGetFoci()
{
var instance = new TestDocument();
Assert.IsNull(configuration.GetFoci(instance));
configuration.HasFoci(x => x.Foci);
Assert.IsNull(configuration.GetFoci(instance));
instance.Foci = new string[] { "value" };
Assert.IsTrue(Object.ReferenceEquals(instance.Foci, configuration.GetFoci(instance)));
}