anchor.diff:                {just_write, {write, V}}
         end, Req, undefined).
   
  -handle_set_recovery_type(Req) ->
  -    case cluster_compat_mode:is_cluster_30() of
  -        true ->
  -            do_handle_set_recovery_type(Req);
  -        false ->
  -            reply_not_found(Req)
  -    end.
  -
   decode_recovery_type("delta") ->
       delta;
   decode_recovery_type("full") ->
  
positive.code: decode_recovery_type(_) ->
      undefined.
  
  do_handle_set_recovery_type(Req) ->
      Params = Req:parse_post(),
      NodeStr = proplists:get_value("otpNode", Params),
  
  
negative.code:                         [{otpNode, OtpNodeErrorMsg}];
                      _ ->
                          []
                  end,
  
                  case cluster_compat_mode:is_cluster_30() orelse Type =/= delta of
                      true ->
                          [];
                      false ->
                          [{'_', <<"This mixed-versions cluster (pre-3.0) cannot support delta recovery">>}]
                  end]),
  
      case Errors of
  