Access association class from a connector

[rjensen]

Hi all,
I have written an add-in to query all links on class elements in a diagram. When it finds an association to a class that is not currently in the diagram it adds the class.
My challenge is now that some of these associations have association classes linked to them. Does anybody know how to determine that? Right now I am accessing the associations through the EA.Element.Connectors collection, and the EA.ConnectorClass does not seem to hold any info about association class linked to it.

[albinofrenchy]

For reasons unknown, I believe the ID for this class is stored in the TransitionEvent property as a string.