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I have an ASO that is acting as a listener to a service. I am
probably doing things stupidly, but it (almost) works. When the ASO
is created, it adds itself as a listener to the service, but I have
no way of removing it as a listener when the session expires or is
explicitly terminated. I know I can probably fudge something
together with a servlet sessionlistener filter that finds my ASO in
the session and "cleans it up", but I'd have to assume I know how to
get the ASO from the session outside of tapestry, which is subject to
change, so I don't really want to do that. Is there any way to
define how an ASO is cleaned up when no longer used, or any
suggestions for a better way to do this?