anchor.diff:      _ = api_vm:add_nodes(Size - 1),
       ok.
   
  -start_first_services(Options) ->
  +start_first_services() ->
       util:if_verbose("~p start first services...~n", [?MODULE]),
       util:if_verbose("~p start randoms...~n", [?MODULE]),
       randoms:start(),
  
positive.code:                   PeriodInSeconds::pos_integer()},
                   [ProcessDescr::supervisor:child_spec()]}}.
  init(Options) ->
      start_first_services(Options),
      supspec(Options).
  
  -spec supspec(any()) -> {ok, {{one_for_one, MaxRetries::pos_integer(),
  
negative.code: 
  %% called by unittest_helper.erl
  -spec start_link([tuple()])
          -> {ok, Pid::pid()} |
             {error, Error::{already_started, Pid::pid()} | shutdown | term()}.
  start_link(Options) ->
      ServiceGroup = "basic_services",
  