anchor.diff:  %%--------------------------------------------------------------------
   -spec cast(name(), request()) -> response().
   cast(PoolName, Call) ->
  -    wpool:call(PoolName, Call).
  +    wpool:cast(PoolName, Call).
   
   
   %%--------------------------------------------------------------------
  
positive.code: -spec stats(name()) -> stats().
  stats(PoolName) ->
      wpool:stats(PoolName).
  
negative.code:     call/2, call/3, call/4,
      cast/2, cast/3,
      stats/0, stats/1
      , default_strategy/0]).
  
  
  %%--------------------------------------------------------------------
  