A resourceType like e.g. JBossAS has no way of finding all the servers and services that are running on it. For dispatching calls to e.g. createResource, it would be handy to have a list of all children, so the plugin could loop through them, see if there is a matching one and delegate it. This way, the plugged in plugin would be self contained.
This bug was previously known as http://jira.rhq-project.org/browse/RHQ-848