anchor.diff:          lists:usort(riak_dt_gset:value(Current)).
   
   %% @doc Return if something is a lattice or not.
  +%%
   is_lattice(Type) ->
       lists:member(Type, ?LATTICES).
   
  
positive.code: 
  %% @doc Determine if a change for a given type is a strict inflation or
  %%      not.
  is_lattice_strict_inflation(riak_dt_gset, undefined, Current) ->
      is_lattice_inflation(riak_dt_gset, undefined, Current);
  is_lattice_strict_inflation(riak_dt_gset, Previous, Current) ->
  
negative.code: 
  %% @doc Declare next key, if undefined.  This function assumes that the
  %%      next key will be declared in the local store.
  %%
  next_key(undefined, Type, Store) ->
      {ok, NextKey} = declare(druuid:v4(), Type, Store),
      NextKey;
  