code: public void deselectByValue(String value) {
          getDispatcher().beforeDeselect(this, value);
          
          new Select(getElement()).deselectByValue(value);
          if (Config.getBoolConfigProperty(ConfigProperty.ENABLE_GUI_LOGGING)) {
              logUIActions(UIActions.CLEARED, value);
          }
          
          getDispatcher().afterDeselect(this, value);
      }
docs: Deselect all options that have a value matching the argument.
  
  @param value
  the value to deselect