* @param array $prop of properties to get (in the keys)
* @param $result ApiResult object
* @param array $thumbParams containing 'width' and 'height' items, or null
- * @param string|array $metadataOpts Options for metadata fetching.
+ * @param array|bool|string $metadataOpts Options for metadata fetching.
* This is an array consisting of the keys:
* 'version': The metadata version for the metadata option
* 'language': The language for extmetadata property