code: public boolean isSIBServerSubject()
     {
       if (tc.isEntryEnabled()) 
         SibTr.entry(tc, "isSIBServerSubject"); 
         
       boolean ispriv = false;
        
       // If the context is userid or alternate user based then it cannot be the
       // privileged SIBServerSubject, so we only need to check the Subject and
       // msg based contexts.     
       if(isSubjectBased())
       {     
         if(authorisationUtils != null)
         {
           ispriv = authorisationUtils.isSIBServerSubject(subject);
         }        
       }
       else if(isMsgBased())
       {     
         if(authorisationUtils != null)
         {
           ispriv = authorisationUtils.sentBySIBServer(msg);
         }             
       }
  
       if (tc.isEntryEnabled())
         SibTr.exit(tc, "isSIBServerSubject", new Boolean(ispriv));
  
       return ispriv; 
     }
docs: Check whether this security context belongs to the privileged SIBServerSubject
  or not.
  
  @param subject
  @param destinationUuid
  @param discriminatorName
  @param operation
  @return