How to get a complex model to parce?

[BrettBock]

The unit test below fails because the result is just a ToString() of the SimpleModel.

How do we get the RazorMachine to use the SimpleModel template?

namespace RazorMachine.Test
{
    public class SimpleModel
    {
        public string Name { get; set; }
    }

    public class ComplexModel
    {
        public SimpleModel SubProperty { get; set; }
    }

    [TestClass]
    public class RazorMachineTest
    {
        [TestMethod]
        public void ComplexModel()
        {
            const string expected = "name";

            var model = new ComplexModel() { SubProperty = new SimpleModel() { Name = expected } };

            var engine = new RazorMachine(includeGeneratedSourceCode: true);
            engine.RegisterTemplate("~/SimpleModel.cshtml",
@"@model RazorMachine.Test.SimpleModel
@Model.Name");
            ITemplate test = engine.Execute("@Model.SubProperty", model);

            Assert.AreEqual(expected, test.ToString());
        }
    }
}