Comment #2 on issue 778 by fabrizio...(a)gmail.com: FAMIXAssociation should not implement sourceAnchor http://code.google.com/p/moose-technology/issues/detail?id=778 I agree with your point. Sometimes can be handy to have sourceAnchor. But your are not pointing to the exact location where the association is, do you? I mean, the implementation of FAMIXAssociation>>>sourceAnchor is: ^self from sourceAnchor so you are anyway returning the sourceAnchor of the sourced entity containing the invocation right? So my point is that the only thing you gain by having sourceAnchor defined in FAMIXAssociation is that in your code, instead of send the message sourceAnchor directly on the association, you will have to send the message from sourceAnchor. The information is not lost anyway is it? Anyway, I wanted to remove sourceAnchor because I'm getting some errors while browsing the source code in the moose panel because some sourceAnchors were broken or because the source language of the file was not define. So no pain with same gain :)