docs: public void unlockSet(SIMessageHandle[] msgHandles) 
        throws SISessionUnavailableException, SISessionDroppedException,
               SIConnectionUnavailableException, SIConnectionDroppedException,
               SIResourceException, SIConnectionLostException, 
               SIIncorrectCallException, SIMessageNotLockedException, 
               SIErrorException
     {
        if (TraceComponent.isAnyTracingEnabled() && tc.isEntryEnabled()) SibTr.entry(this, tc, "unlockSet",
                                             new Object[] 
                                             {
                                                msgHandles.length + " msg ids"
                                             });
        
        unlockSet(msgHandles, true); //True is the default as it matches with old behaviour.
  
        if (TraceComponent.isAnyTracingEnabled() && tc.isEntryEnabled()) SibTr.exit(this, tc, "unlockSet");
     }