SELECT * from sys_addons.plpgsql_check_function('helpdesk._get_specialist(int)');
SELECT * from sys_addons.plpgsql_check_function('helpdesk.create_issue(out int4,in json)');
SELECT * from sys_addons.plpgsql_check_function('helpdesk.create_issue(json)');
SELECT 'helpdesk.create_issue(json)'::regprocedure;