code: public Image getColumnImage(Object element, int columnIndex) {
      if ((columnIndex == 0) && (element instanceof HadoopServer)) {
        return ImageLibrary.getImage("server.view.location.entry");
  
      } else if ((columnIndex == 0) && (element instanceof HadoopJob)) {
        return ImageLibrary.getImage("server.view.job.entry");
      }
      return null;
    }
docs: /* @inheritDoc