/**
* @see Behat\Mink\Driver\DriverInterface::keyPress()
*
* @throws Behat\Mink\Exception\UnsupportedDriverActionException action is not supported by this driver
*/
public function keyDown($xpath, $char, $modifier = null)
{
$this->keyDownModifier($modifier);
$this->browser->keyDown(SeleniumLocator::xpath($xpath), $char);
$this->keyUpModifier($modifier);
}