code: public void alertClose() {
          if (com.ibm.ejs.ras.TraceComponent.isAnyTracingEnabled()&&logger.isLoggable (Level.FINE))  //306998.15
              logger.logp(Level.FINE, CLASS_NAME,"alertClose", " _outWriter: --> " + _outWriter);
          // 104771
          writerClosed = true;
  
          if (com.ibm.ejs.ras.TraceComponent.isAnyTracingEnabled()&&logger.isLoggable (Level.FINE))  //306998.15
              logger.logp(Level.FINE, CLASS_NAME,"alertClose", "exit");
      }
docs: Alert message that the outputstream has been closed.