Specify from users point of view destination queue for message;
implicity uses internally a TopicObject DTD
But DestinationObject inherits from TreeObject
List of Entities for which one wishes to direct some information
This can be explicit names or implicitly defined either a
selector or by Topic of Publish/Subscribe system
Specify list of destination objects using DestinationObject DTD
Allows multiple destinations and implies DestinationQueue,
DestinationTopic, DestinationSubTopic
Used in cruder JMS Header specification of Destination