This means it's value will be lost during dump+restore.
select array_length(extconfig, 1) from pg_catalog.pg_extension where extname = 'pgq';
array_length
--------------
- 7
+ 6
(1 row)
select pgq.create_queue('testqueue2');
select array_length(extconfig, 1) from pg_catalog.pg_extension where extname = 'pgq';
array_length
--------------
- 7
+ 6
(1 row)
SELECT pg_catalog.pg_extension_config_dump('pgq.event_template', '');
SELECT pg_catalog.pg_extension_config_dump('pgq.retry_queue', '');
-SELECT pg_catalog.pg_extension_config_dump('pgq.batch_id_seq', '');
+---- pg_dump is broken and cannot handle dumpable sequences
+-- SELECT pg_catalog.pg_extension_config_dump('pgq.batch_id_seq', '');