Multiple endpoints in IRP?

[David Hull <dmh@tibco.com>]

While reading through WSDM MUWS, I ran across this interesting statement:

"If the manageability endpoint corresponds to a variable number (zero or 
more) of manageable resources, then the WSRF Implied Resource Pattern 
MUST be followed.  This means that the element(s) listed in the 
ReferenceProperties of a WS-Resource qualified EPR must be included in 
the header of messages sent to such manageability endpoints."

This seems to imply a WS-Address with multiple ReferenceProperties 
elements, one for each EPR.

Does the IRP allow for multiple resources to be addressed as a group?  
Does this have to be done via repeated ReferenceProperties elements, or 
could one give a predicate instead, or bake something magic into the 
Address URI?

I realize that the IRP is in a fluid state at the moment, but I'd be 
interested to know current thinking.  Is this the sort of issue the WSRP 
subgroup is trying to address?