anchor.diff:  enable_dht(AppConfig) ->
       [{dht, true}|AppConfig].
   
  +enable_mdns(AppConfig) ->
  +    [{mdns, true}|AppConfig].
   
   %% Returns true, if files are equal.
   compare_file_contents(Fn1, Fn2) ->
  
positive.code:     clean_standard_directory_layout(LNodeDir),
      stop_opentracker(?config(tracker_port, Config)),
      ok;
  end_per_testcase(bep9, Config) ->
      SNode       = ?config(seed_node, Config),
      LNode       = ?config(leech_node, Config),
  
negative.code: 	 leech_transmission/0, leech_transmission/1,
       bep9/0, bep9/1,
       partial_downloading/0, partial_downloading/1,
       checking/0, checking/1,
       find_local_peers/0, find_local_peers/1
       ]).
  
  
  