IQ getComponentInfo( JID domain )
    {
        return componentInfo.get( domain.toString() );
    }
Adds a new listener that will be notified of component events. Events being
notified are: 1) when a component is added to the component manager, 2) when
a component is deleted and 3) when disco#info is received from a component.

@param listener the new listener to notify of component events.
xmppserver/src/main/java/org/jivesoftware/openfire/component/InternalComponentManager.java