docs: public Object getImageIcon(Object value)
      {
          int index = 0;
          if (value instanceof Integer)
              index = ((Integer)value).intValue();
          else if (value != null)
          {
              try {
                  index = Integer.parseInt(value.toString());
              } catch (NumberFormatException ex) {
              }
          }
          return this.getIcon(index);
      }