I couldn't find a specific testability-explorer-plugin subcomponent.

I have a maven2 modular project. I've configured testability explorer ant task
as prescribed and it generates a valid xml and html report for the project. The
hudson plugin does not complain and creates a trend graph and report but it is
always "cost" 0 and there are no classes tracked. I've tried to configure the
plugin from the top-level job and specific modules with no effect.