anchor.diff:  init_per_round(Fun, Keys) when Fun =:= lindex;
                                  Fun =:= lrange_s;
                                  Fun =:= lrange_n;
  -                               Fun =:= lrem ->
  +                               Fun =:= lrem;
  +                               Fun =:= ltrim ->
     _ =
       edis_db:run(
         edis_db:process(0),
  
positive.code:                   args = [?KEY, edis_util:binary_to_integer(Key), edis_util:binary_to_integer(Key)],
                    group = lists, result_type = multi_bulk}).
  
  -spec lrange_n([binary()]) -> undefined.
  lrange_n([Key|_]) ->
    edis_db:run(
      edis_db:process(0),
  
negative.code:          quit/0, quit_per_testcase/1, quit_per_round/2]).
  -export([blpop/1, blpop_nothing/1, brpop/1, brpop_nothing/1, brpoplpush/1, lindex/1, linsert/1,
           llen/1, lpop/1, lpush/1, lpushx/1, lrange_s/1, lrange_n/1, lrem_x/1, lrem_y/1, lrem_0/1,
           lset/1, ltrim/1]).
  
  %% ====================================================================
  %% External functions
  