NotificationTarget::addGroupsToTargets PHP Method

    function addGroupsToTargets($entity)
    {
        global $DB;
        // Filter groups which can be notified and have members (as notifications are sent to members)
        $query = "SELECT `id`, `name`\n                FROM `glpi_groups`" . getEntitiesRestrictRequest(" WHERE", 'glpi_groups', 'entities_id', $entity, true) . "\n                      AND `is_usergroup`\n                      AND `is_notify`\n                ORDER BY `name`";
        foreach ($DB->request($query) as $data) {
            //Add group
            $this->addTarget($data["id"], sprintf(__('%1$s: %2$s'), __('Group'), $data["name"]), Notification::GROUP_TYPE);
            //Add group supervisor
            $this->addTarget($data["id"], sprintf(__('%1$s: %2$s'), __('Manager of group'), $data["name"]), Notification::SUPERVISOR_GROUP_TYPE);
            //Add group without supervisor
            $this->addTarget($data["id"], sprintf(__('%1$s: %2$s'), __("Group except manager users"), $data["name"]), Notification::GROUP_WITHOUT_SUPERVISOR_TYPE);
        }
    }