anchor.diff:  %%
   %% %CopyrightBegin%
   %%
  -%% Copyright Ericsson AB 2010-2013. All Rights Reserved.
  +%% Copyright Ericsson AB 2010-2015. 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
  
positive.code:     7 = ?stat:incr(C1, Ref, 7),
      Self = self(),
      [{Ref,  [{C1,7}]}, {Self, [{C1,2}, {C2,1}]}]
          = lists:sort(?stat:read([self(), Ref, make_ref()])),
      [] = ?stat:read([]),
      [] = ?stat:read([make_ref()]),
      ?stat:flush([self(), Ref, make_ref()]).
  
negative.code:     [{Self,  [{C1,1}, {C2,2}]}]
          = ?stat:sum([self()]),
      [{Ref, [{C1,7}]}, {Self, [{C1,1}, {C2,2}]}]
          = ?stat:flush([self(), Ref]).
  
  flush(_) ->
      Ref = make_ref(),
  