code: public String visualize(Object obj) throws ConverterException {
          Integer pad = 0;
          String padc = getConfig("pad-count", "0");
          try {
              pad = Integer.parseInt(padc);
          } catch (Exception e) {
          }
          char padch = getConfig("pad-char", " ").charAt(0);
          String padd = getConfig("pad-direction", "left");
  
          String prefix = getConfig("prefix");
          String suffix = getConfig("suffix");
          String res = obj != null ? obj.toString() : "";
          if (padd.compareToIgnoreCase("left") == 0) {
              res = Utils.padleft(res, pad, padch);
          } else {
              res = Utils.padright(res, pad, padch);
          }
          if (prefix != null) {
              res = prefix + res;
          }
          if (suffix != null) {
              res = res + suffix;
          }
          return res;
      }
docs: Visualization with some standard properties.
  @param obj The object to visualize
  @param extra Some extra text. Not used at the moment.
  @return The string representation of the given object
  @throws ConverterException when an exception occurs trying to convert.