public static function get_status_names()
 {
     if (!self::$_status_names) {
         self::$_status_names = apply_filters('app-template-status_names', apply_filters('app_statuses', array('pending' => __('Pending', 'appointments'), 'paid' => __('Paid', 'appointments'), 'confirmed' => __('Confirmed', 'appointments'), 'completed' => __('Completed', 'appointments'), 'reserved' => __('Reserved by GCal', 'appointments'), 'removed' => __('Removed', 'appointments'))));
     }
     return self::$_status_names;
 }