code: public static void warning(TraceComponent tc, String msgKey) {
      if(isTracing()) SibTr.warning(tc, msgKey);
  
    }
docs: /* (non-Javadoc)
  @see com.ibm.ws.sib.utils.ras.SibTr#warning(com.ibm.websphere.ras.TraceComponent, java.lang.String)