NitroNetExample.cs

// Model for parent.hbs
public class ParentComponentModel {
	public string Text { get; set; }
	public string Modifier { get; set; } = "parent-default";
	public SubcomponentModel Subcomponent { get; set; }
}

// Model for subcomponent.hbs
public class SubcomponentModel {
	public string Content { get; set; }
	public string Decorator { get; set; } = "subcomponent-default";
}

// Controller Index() method
public ActionResult Index() {
	return View("parent", new ParentComponentModel {
		Text = "Parent",
		Subcomponent = new SubcomponentModel {
			Content = "Subcomponent"
		}
	});
}