*
* @since 1.21
*
- * @var array[]
+ * @var array[]|false
*/
protected $localIds = [];
*
* @param bool|string $pageName
*
- * @return string|bool
+ * @return string|bool|null
*/
public function getPageUrl( $pageName = false ) {
$url = $this->getLinkPath();
*
* @since 1.21
*
- * @param string $languageCode
+ * @param string|null $languageCode
*/
public function setLanguageCode( $languageCode ) {
- if ( !Language::isValidCode( $languageCode ) ) {
+ if ( $languageCode !== null && !Language::isValidCode( $languageCode ) ) {
throw new InvalidArgumentException( "$languageCode is not a valid language code." );
}
$this->languageCode = $languageCode;