* delete the entire cache if group is not specified
*
* @param string $group The group name of the entries to be deleted
- * @param string $path path of the item that needs to be deleted
- * @param booleab $clearAll clear all caches
+ * @param string $path path of the item that needs to be deleted
+ * @param bool|\booleab $clearAll clear all caches
*
* @return void
* @static
* Do periodic cleanup of the CiviCRM session table. Also delete all session cache entries
* which are a couple of days old. This keeps the session cache to a manageable size
*
+ * @param bool $session
+ * @param bool $table
+ * @param bool $prevNext
+ *
* @return void
* @static
* @access private