TODO describe me.
Interface Summary Interface Description WorkgroupInvitationListenerAn interface which all classes interested in hearing about group chat invitations should implement.
Class Summary Class Description MetaDataMetaData stanza extension. QueueUserAn immutable class which wraps up customer-in-queue data return from the server; depending on the type of information dispatched from the server, not all information will be available in any given instance. WorkgroupInvitationAn immutable class wrapping up the basic information which comprises a group chat invitation.