anchor.diff:      end;
   idle(rebalance_progress, _From, State) ->
       {reply, not_running, idle, State};
  -%% NOTE: this is being remotely called by 1.8.x nodes and used by maybe_start_rebalance
  +%% NOTE: this is not remotely called but is used by maybe_start_rebalance
   idle({start_rebalance, KeepNodes, EjectNodes, FailedNodes}, _From,
               #idle_state{remaining_buckets = RemainingBuckets}) ->
       ?user_log(?REBALANCE_STARTED,
  
positive.code:                       Ret
                end
        end, infinity, 1000).
  
  -spec start_rebalance_old_style([node()], [node()], [node()]) ->
                                         ok | in_progress | already_balanced.
  start_rebalance_old_style(KeepNodes, EjectedNodes, FailedNodes) ->
      wait_for_orchestrator(),
      gen_fsm:sync_send_event(?SERVER, {start_rebalance, KeepNodes,
                                        EjectedNodes, FailedNodes}).
  
  
  -spec start_rebalance([node()], [node()]) ->
                               ok | in_progress | already_balanced |
  
negative.code:          rebalance_progress/0,
           rebalance_progress_full/0,
           start_link/0,
           start_rebalance/2,
           stop_rebalance/0,
           update_progress/1,
  