docs: public Actions keyDown(WebElement target, CharSequence key) {
      if (isBuildingActions()) {
        action.addAction(new KeyDownAction(jsonKeyboard, jsonMouse, (Locatable) target, asKeys(key)));
      }
      return focusInTicks(target)
          .addKeyAction(key, codepoint -> tick(defaultKeyboard.createKeyDown(codepoint)));
    }