(leaveGroupRequestV0)
| 558 | joinGroup(joinGroupRequest) (joinGroupResponse, error) |
| 559 | syncGroup(syncGroupRequestV0) (syncGroupResponseV0, error) |
| 560 | leaveGroup(leaveGroupRequestV0) (leaveGroupResponseV0, error) |
| 561 | heartbeat(heartbeatRequestV0) (heartbeatResponseV0, error) |
| 562 | offsetFetch(offsetFetchRequestV1) (offsetFetchResponseV1, error) |
| 563 | offsetCommit(offsetCommitRequestV2) (offsetCommitResponseV2, error) |
no outgoing calls