Optional ReadonlyisolationIsolation level for transactional reads (v2+). 0 = READ_UNCOMMITTED (default), 1 = READ_COMMITTED.
Optional ReadonlyreplicaThe broker ID of the requester, or -1 for clients. Used for debugging on the broker side.
Optional ReadonlytaggedTagged fields (v6+).
ReadonlytopicsThe topics to query.
ListOffsets request payload.