anchor.diff:        [{simple, [shuffle]},
          {hyparview, [shuffle]}
         ]},
  +
  +     {group, with_ack, []},
   
        {group, with_causal_labels, []},
   
  
positive.code:     [{parallelism, 1}, {channels, []}] ++ Config;
  init_per_group(with_causal_labels, Config) ->
      [{causal_labels, [default]}] ++ Config;
  init_per_group(with_tls, Config) ->
      TLSOpts = make_certs(Config),
      [{parallelism, 1}, {tls, true}] ++ TLSOpts ++ Config;
  
negative.code:        hyparview_manager_high_active_test,
         hyparview_manager_low_active_test,
         hyparview_manager_high_client_test]},
  
       {with_ack, [],
        [default_manager_test]},
  
       {with_causal_labels, [],
        [causal_test]},
  