TransformedList question

Hi

Love glazed lists. Been following the Tutorials on the wiki. I am working thru Tutorial5, which deals with a TransformedList.

What if each Issue could have more than one User attached to it? How then would I implement the TransformedList with Dynamic filtering?  

I am working on an application where I need to do something like this - but I am not sure how to do it? Anyone ever tackle this problem?