anchor.diff:  sc_lc_acceptor_response_tcp4(_Config) when is_list(_Config) ->
       tc_try(sc_lc_acceptor_response_tcp4,
              fun() ->
  -                   not_yet_implemented(),
                      ?TT(?SECS(10)),
                      InitState = #{domain   => inet,
                                    type     => stream,
  
positive.code:            cmd  => fun(#{sec_server3 := Pid} = _State) ->
                             receive
                                 {'DOWN', _, process, Pid, Reason} ->
                                     ee("Unexpected DOWN regarding sec-server ~p: "
                                        "~n   ~p", [Pid, Reason]),
                                     {error, {unexpected_exit, sec_server1}};
                                 {ready, Pid} ->
                                     ok
                             end
  
negative.code:            cmd  => fun(#{sec_server2 := Pid} = _State) ->
                             receive
                                 {'DOWN', _, process, Pid, Reason} ->
                                     ee("Unexpected DOWN regarding sec-server-2 ~p: "
                                        "~n   ~p", [Pid, Reason]),
                                     {error, {unexpected_exit, sec_server2}};
                                 {ready, Pid} ->
                                     ok
                             end
  