Action::checkPhoneNumber

public function checkPhoneNumber($phoneNumber);

/**
 * Should return response for the scenario.
 * @param string $callId Id of the call.
 * @param int $userId Id of the user.
 * @param string $phoneNumber Phone number.
 * @return array
 */
abstract public function getResponse($callId, $userId, $phoneNumber);

/**
 * Returns name of the class.
 * @return string
 */
public static function getClass()
{
	return get_called_class();
}