Trouble mocking a generic methed

I am using the following code to unit test that a generic method is being called:

MockManager.Init();
Mock mock = MockManager.Mock(typeof (UnityContainer));
mock.ExpectAndReturn("RegisterType", mock.MockedInstance, typeof (IOrdersView), typeof (OrdersView));

var mockRegionManager = (IRegionManager)RecorderManager.CreateMockedObject(typeof(IRegionManager));

IUnityContainer mockedContainer = new UnityContainer();
IModule module = new OrdersModule(mockedContainer, mockRegionManager);
module.Initialize();
MockManager.Verify();

I'm getting the following error:

TypeMock.TypeMockException:
*** Method RegisterType in type Microsoft.Practices.Unity.UnityContainer has no matching overload that returns TypeMock.Mock+a.



Basically I want to verify that the following is called in the module.Initialize() method:

mockedContainer.RegisterType<IOrdersView, OrdersView>();

I don't care what the RegisterType method returns.

Any ideas?