anchor.diff:                                     vectorclock:from_list([{1,4}]),Ops),
       ?assertEqual(6,riak_dt_gcounter:value(Gcounter3)),
       {ok, Gcounter4} = get_snapshot(riak_dt_gcounter,
  -                                   vectorclock:from_list([{5,7}]),Ops),
  +                                   vectorclock:from_list([{1,7}]),Ops),
       ?assertEqual(6,riak_dt_gcounter:value(Gcounter4)).
   
   materializer_clocksi_concurrent_test() ->
  
positive.code: 
      Ops = [Op1,Op2,Op3],
      {ok, GCounter2} = update_snapshot(riak_dt_gcounter,
                                        GCounter, vectorclock:from_list([{2,2}]),
                                        Ops, ignore),
      ?assertEqual(4,riak_dt_gcounter:value(GCounter2)),
      {ok, Gcounter3} = get_snapshot(riak_dt_gcounter,
  
negative.code: %% @doc Applies the operation of a list to a CRDT. Only the
  %%      operations with smaller timestamp than the specified
  %%      are considered. Newer operations are discarded.
  %%      Input:
  %%      Type: The type of CRDT to create
  %%      Snapshot: Current state of the CRDT
  %%      SnapshotTime: Threshold for the operations to be applied.
  