docs: public void addListeners()
      {
          super.addListeners();
          // By default, all fields are disabled (enable the target fields).
          for (int iFieldSeq = 0; iFieldSeq < this.getSFieldCount(); iFieldSeq++)
          {
              ScreenField sField = this.getSField(iFieldSeq);
              if (!(sField instanceof ToolScreen))
                  sField.setEnabled(false);
          }
          // 2. The first thing to do is to see if this is a message reply or just a screen display
          BaseMessage message = this.getMessage();
          if (message != null)
          {
              this.moveMessageParamsToScreen(message);
              if (this.isReplyMessage(message))
              {
                  // If this is a reply message, you may want to display this screen differently.
              }
          }
      }