+ MED_ORB::status unregisterPresentation(CORBA::Long presentationId);
+
+// // Caller owns the returned list, and is responsible for the list deletion.
+// MED_ORB::PresentationsList* getSiblingPresentations(CORBA::Long presentationId);
+
+ // Get all presentations registered in the study
+ MED_ORB::PresentationsList* getStudyPresentations();
+
+ char* getStudyPresentationEntry(CORBA::Long presentationId);
+
+ void cleanUp();