Spun off from
CMP-336.
Here is an example of what I'd like to do:
<!-- Abstract parent bean: -->
<compass:compass name="abstractCompass" dataSource="dataSource" abstract="true">
<!-- Compass configuration details go here -->
</compass:compass>
<!-- Child bean: -->
<compass:compass name="concreteCompass" parent="abstractCompass">
<!-- Override configuration details go here -->
</compass:compass>