| CurrentEventsByPersistenceIdQuery | A plugin may optionally support this query by implementing this trait. | 
| CurrentEventsByTagQuery | A plugin may optionally support this query by implementing this trait. | 
| CurrentPersistenceIdsQuery | A plugin may optionally support this query by implementing this trait. | 
| DurableStateStorePagedPersistenceIdsQuery<A> | A DurableStateStore may optionally support this query by implementing this trait. | 
| DurableStateStoreQuery<A> | Query API for reading durable state objects. | 
| EventsByPersistenceIdQuery | A plugin may optionally support this query by implementing this trait. | 
| EventsByTagQuery | A plugin may optionally support this query by implementing this trait. | 
| PagedPersistenceIdsQuery | A plugin ReadJournal may optionally support this query by implementing this trait. | 
| PersistenceIdsQuery | A plugin may optionally support this query by implementing this trait. | 
| ReadJournal | API for reading persistent events and information derived
 from stored persistent events. |