Yasumi\Holiday::__construct PHP Method

    public function __construct($shortName, array $names, $date, $displayLocale = self::DEFAULT_LOCALE, $type = self::TYPE_NATIONAL)
    {
        // Validate if short name is not empty
        if (empty($shortName)) {
            throw new InvalidArgumentException('Holiday name can not be blank.');
        }
        // Validate if date parameter is instance of DateTime
        if (!$date instanceof DateTime) {
            throw new InvalidArgumentException(sprintf('Date "%s" is not a valid DateTime instance.', $date));
        }
        // Load internal locales variable
        if (!isset(static::$locales)) {
            static::$locales = Yasumi::getAvailableLocales();
        }
        // Assert display locale input
        if (!in_array($displayLocale, static::$locales)) {
            throw new UnknownLocaleException(sprintf('Locale "%s" is not a valid locale.', $displayLocale));
        }
        // Set additional attributes
        $this->shortName = $shortName;
        $this->translations = $names;
        $this->displayLocale = $displayLocale;
        $this->type = $type;
        // Construct instance
        parent::__construct($date->format('Y-m-d'), $date->getTimezone());
    }