anchor.diff:      [{Self,  [{C1,1}, {C2,2}]}]
           = ?stat:sum([self()]),
       [{Ref, [{C1,7}]}, {Self, [{C1,1}, {C2,2}]}]
  -        = lists:sort(?stat:flush([self(), Ref])).
  +        = ?stat:flush([self(), Ref]).
   
   flush(_) ->
       Ref = make_ref(),
  
positive.code: %%
  %% %CopyrightBegin%
  %%
  %% Copyright Ericsson AB 2010-2013. All Rights Reserved.
  %%
  %% The contents of this file are subject to the Erlang Public License,
  %% Version 1.1, (the "License"); you may not use this file except in
  
negative.code:     7 = ?stat:incr(C1, Ref, 7),
      Self = self(),
      [{Ref,  [{C1,7}]}, {Self, [{C1,2}, {C2,1}]}]
          = ?stat:read([self(), Ref, make_ref()]),
      [] = ?stat:read([]),
      [] = ?stat:read([make_ref()]),
      ?stat:flush([self(), Ref, make_ref()]).
  