typemocking generic method

I'm trying to figure out how to typemock a generic method.

The line of code that I am trying to mock looks as follows:

foreach (X<Y> x1 in inst.Translate<X<Y>>())

where Translate is defined as IEnumerable <T> Translate<T>() where T : Element<D>;

My test is as follows:

UnitTestSupport.ForEachSupport<X<Y>> mockForEachLoop2
= new UnitTestSupport.ForEachSupport<X<Y>>();

MockObject mockRetX = MockManager.MockObject(typeof(X<Y>));

mockForEachLoop2.LoopStart("Translate");

where LoopStart is:
namespace UnitTestSupport
{
public class ForEachSupport<TContainer>
{
mockIEnumerable = MockManager.MockObject(typeof(IEnumerable<TContainer>));

public void LoopStart(string firstCall)
{
mockTContainer.ExpectAndReturn(firstCall, mockIEnumerable.Object as IEnumberable<TContainer>);
mockIEnumerable.ExpectAndReturn("GetEnumerator", mockIEnumerator.Object as IEnumerator<TContainer>);
} // Start
}
}

I'm not sure how to define the generic type of Translate. When I run it this way I get errors.

Test method HandlerTest threw exception: TypeMock.TypeMockException:
*** No method Translate in type X`1[Y] returns IEnumerable`1[X`1[Y].

Thanks for the help.