anchor.diff:  %% TEST CASES: performance enter b_tree order 257
   %%--------------------------------------------------------------------
   
  -performance_enter_b_tree_order_257_test(Config) ->
  +enter_b_tree_order_257_test(Config) ->
       BTree = b_trees:empty(257),
       KeyValues = ?config(key_values, Config),
       enter_b_tree(KeyValues, BTree),
  
positive.code: %% TEST CASES: performance keys b_tree order 65
  %%--------------------------------------------------------------------
  
  performance_keys_b_tree_order_65_test(Config) ->
      BTree = ?config(btree_65, Config),
      Keys = b_trees:keys(BTree),
      ?assertEqual(?NUMBER_INSERTS, length(Keys)),
  
negative.code: %% TEST CASES: performance values b_tree order 257
  %%--------------------------------------------------------------------
  
  values_b_tree_order_257_test(Config) ->
      BTree = ?config(btree_257, Config),
      Keys = b_trees:values(BTree),
      ?assertEqual(?NUMBER_INSERTS, length(Keys)),
  