anchor.diff:      put(password_change, Req, [{role, Role},
                                  {userid, get_user_id(User)}]).
   
  -print_list(List) ->
  -    io_lib:format("~p", [List]).
  -
   add_node(Req, Hostname, Port, User, GroupUUID, Services, Node) ->
       put(add_node, Req, [{node, Node},
                           {groupUUID, GroupUUID},
                           {hostname, Hostname},
                           {port, Port},
  -                        {services, print_list(Services)},
  +                        {services, {list, Services}},
                           {user, get_user_id(User)}]).
   
   remove_node(Req, Node) ->
  
positive.code:     8200.
  
  
  to_binary(A) when is_list(A) ->
      iolist_to_binary(A);
  to_binary(A) ->
  
negative.code:                   all ->
                        all;
                    _ ->
                        {list, DeltaRecoveryBuckets}
                end,
      put(rebalance_initiated, Req,
          [{known_nodes, {list, KnownNodes}},
           {ejected_nodes, {list, EjectedNodes}},
           {delta_recovery_buckets, Buckets}]).
  