[news.eclipse.modeling.gmf] show non containment reference inside the no

[idelman.andro@xxxxxxxxx (Idelman Andro)]

Hi,
let say I have class A with a reference to class B (not contained in A). 
class B contain a list of class C, and
class A contain a list of class D.
each class D have a reference to a class C (that have to be inside B 
referred in the A that contain the it).
I want make it look like the B is inside A.
in case one B is be referred by several A's, then the figure of B should 
be inside each one of the A's.
something like this -

|-----A--------------|
|                    |
|    |B--------|     |
|    |         |     |
|    |    C <--+---D |
|    |         |     |
|    |    C <--+---D |
|    |         |     |
|    |---------|     |
|                    |
|                    |
|--------------------|

anyone got an idea how this could be done?
the main problem is to show the un-contained B inside A.
I've read many threads about non containment feature, but yet was unable 
to solve this problem.