nextcloud / files_fulltextsearch

			$groups = ['admin'];

		}

		foreach ($groups as $groupName) {

			$group = $this->groupManager->get($groupName);

			$users = $group->getUsers();

			if (sizeof($users) > 0) {

				return array_keys($users)[0];

			}

		}

		throw new ExternalMountWithNoViewerException(

			'cannot get a valid user for external mount'

	 * @return string

	 */

	private function getRandomUserFromGroups($groups) {

		foreach ($groups as $groupName) {

			$group = $this->groupManager->get($groupName);

			$users = $group->getUsers();

			if (sizeof($users) > 0) {

				return array_keys($users)[0];

			}

		}

		return '';

	}