anchor.diff:  
   -include("lasp.hrl").
   
  --export([get_cluster_members/1,
  +-export([runner_node/0,
  +         get_cluster_members/1,
            pmap/2,
            wait_until/3,
            wait_until_left/2,
  
positive.code:          wait_until_connected/2,
           nodelist/0,
           start_node/3,
           start_nodes/2,
           stop_nodes/2,
           stop_runner/0,
  
negative.code:     wait_until(fun() ->
                  pong == rpc:call(Node1, net_adm, ping, [Node2])
          end, 60*2, 500).
  
  start_and_join_node(Name, Config, Case) ->
      Node = start_node(Name, Config, Case),
      RunnerNode = runner_node(),
      {ok, Members} = partisan_peer_service:members(),
      join_to(Node, RunnerNode),
      Nodes = Members ++ [Node],
      wait_until_joined(Nodes, Nodes),
      Node.
  
  start_node(Name, Config, Case) ->
      CodePath = lists:filter(fun filelib:is_dir/1, code:get_path()),
  