if(arguments.get(Queue.MESSAGE_GROUP_SHARED_GROUPS) != null
&& (Boolean)(arguments.get(Queue.MESSAGE_GROUP_SHARED_GROUPS)))
{
Object defaultGroup = arguments.get(Queue.MESSAGE_GROUP_DEFAULT_GROUP);
_messageGroupManager =
new DefinedGroupMessageGroupManager(String.valueOf(arguments.get(Queue.MESSAGE_GROUP_KEY)),
defaultGroup == null ? DEFAULT_SHARED_MESSAGE_GROUP : defaultGroup.toString(),
this);
}
else
{