code: @Override
      public final void expirerStart() throws SevereMessageStoreException
      {
          if (TraceComponent.isAnyTracingEnabled() && tc.isEntryEnabled())
              SibTr.entry(this, tc, "expirerStart");
  
          _expirer.start(_expiryInterval, _messagingEngine);
  
          if (TraceComponent.isAnyTracingEnabled() && tc.isEntryEnabled())
              SibTr.exit(this, tc, "expirerStart");
      }
docs: /*
  (non-Javadoc)
  
  @see com.ibm.ws.sib.msgstore.MessageStore#expirerStart()