code: public void handleControlMessage(SIBUuid8 sourceMEUuid, ControlMessage cMsg)
    {
      if (TraceComponent.isAnyTracingEnabled() && tc.isEntryEnabled()) 
        SibTr.entry(tc, "handleControlMessage", new Object[]{sourceMEUuid, cMsg});
        
      InvalidOperationException e = new InvalidOperationException(
          nls.getFormattedMessage(
            "INTERNAL_MESSAGING_ERROR_CWSIP0001",
            new Object[] {
              "com.ibm.ws.sib.processor.impl.DurableInputHandler",
              "1:183:1.52.1.1" },
            null));
      
      // FFDC
      FFDCFilter.processException(
        e,
        "com.ibm.ws.sib.processor.impl.DurableInputHandler.handleControlMessage",
        "1:190:1.52.1.1",
        this);
        
      SibTr.exception(tc, e);
      SibTr.error(tc, "INTERNAL_MESSAGING_ERROR_CWSIP0001",
        new Object[] {
          "com.ibm.ws.sib.processor.impl.DurableInputHandler",
          "1:197:1.52.1.1" });
      
      if (TraceComponent.isAnyTracingEnabled() && tc.isEntryEnabled()) 
        SibTr.exit(tc, "handleControlMessage", e);
      throw e;
    }
docs: NOP for the durable handlers.