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