Results from version 18:
| 1. | (config) | autovacuum_multixact_freeze_max_age | 19.10. Vacuuming |
| 2. | (config) | vacuum_multixact_failsafe_age | 19.10. Vacuuming |
| 3. | (config) | vacuum_multixact_freeze_min_age | 19.10. Vacuuming |
| 4. | (config) | vacuum_multixact_freeze_table_age | 19.10. Vacuuming |