anchor.diff:              Config = make_config(RawHosts, NewBL),
               ok = file:write_file(os:getenv("DISCO_MASTER_CONFIG"),
                                    mochijson2:encode({struct, Config})),
  -            update_config_table(RawHosts),
  +            update_config_table(HostInfo),
               {ok, <<"table saved!">>};
           true ->
               {error, <<"duplicate nodes">>}
  
positive.code: -spec do_get_config_table() -> {'ok', raw_hosts()}.
  do_get_config_table() ->
      RawHosts = get_raw_hosts(get_full_config()),
      update_config_table(RawHosts),
      {ok, RawHosts}.
  
  -spec do_save_config_table(raw_hosts()) -> {'ok' | 'error', binary()}.
  do_save_config_table(RawHosts) ->
      Hosts = get_expanded_hosts(RawHosts),
      Sorted = lists:sort(Hosts),
      USorted = lists:usort(Hosts),
  
negative.code:     Instances = string:strip(binary_to_list(InstancesB)),
      add_nodes(string:tokens(NodeSpec, ":"), list_to_integer(Instances)).
  
  -spec update_config_table([host_info()]) -> _.
  update_config_table(HostInfo) ->
      disco_server:update_config_table(HostInfo).
  
  -spec get_full_config() -> config().
  get_full_config() ->
  