public function getPhotoTags() {
		$tags = [];
		$annotations = elgg_get_annotations([
			'guid' => $this->getGUID(),
			'annotation_name' => 'phototag',
		]);
		foreach ($annotations as $annotation) {
			$tag = unserialize($annotation->value);
			$tag->annotation_id = $annotation->id;
			$tags[] = $tag;
		}

		return $tags;
	}