docs: public ScreenModel doServletCommand(ScreenModel screenParent)
      {
          ScreenModel screen = super.doServletCommand(screenParent);    // Process params from previous screen
          
          if (MenuConstants.SUBMIT.equalsIgnoreCase(this.getProperty(DBParams.COMMAND)))
          {
              if (this.getTask().getStatusText(DBConstants.WARNING_MESSAGE) == null)
              {   // Normal return = logged in, go to main menu.
                  this.free();
                  return null;    // This will cause the main menu to display
              }
              else
              {
                  this.getScreenRecord().getField(UserScreenRecord.CURRENT_PASSWORD).setData(null, DBConstants.DISPLAY, DBConstants.INIT_MOVE);
                  this.getScreenRecord().getField(UserScreenRecord.NEW_PASSWORD_1).setData(null, DBConstants.DISPLAY, DBConstants.INIT_MOVE);
                  this.getScreenRecord().getField(UserScreenRecord.NEW_PASSWORD_2).setData(null, DBConstants.DISPLAY, DBConstants.INIT_MOVE);
              }
          }
          
          return screen;    // By default, don't do anything
      }