Affects Version/s: 2.0
Fix Version/s: None
When grouping messages, there is no specified way to flag a message as the last one in a group.
To determine the last message in a group, one has to fall back to a vendor-specific property.
A good example can be found here: http://www.ibm.com/developerworks/websphere/library/techarticles/0602_currie/0602_currie.html
Adding a boolean JMS defined property with a name like JMSXGroupLast or similar would enable receiving group messages to be portable among different JMS providers.