anchor.diff:  	t_bif_map_to_list, t_bif_map_from_list,
   
   	%% erlang
  -	t_erlang_hash, t_map_encode_decode
  +	t_erlang_hash, t_map_encode_decode,
  +	%t_size,
  +	t_map_size
       ].
   
   groups() -> [].
  
positive.code: 	t_guard_receive/1, t_guard_fun/1,
  	t_list_comprehension/1,
  	t_map_sort_literals/1,
  	t_size/1, t_map_size/1,
  
  	%% Specific Map BIFs
  	t_bif_map_get/1,
  
negative.code:     ok.
  
  %% Tests size(Map).
  %% not implemented, perhaps it shouldn't be either
  
  %t_size(Config) when is_list(Config) ->
  %    0 = size(#{}),
  %    1 = size(#{a=>1}),
  %    1 = size(#{a=>#{a=>1}}),
  %    2 = size(#{a=>1, b=>2}),
  %    3 = size(#{a=>1, b=>2, b=>"3"}),
  %    ok.
  
  t_map_size(Config) when is_list(Config) ->
      0 = map_size(id(#{})),
  