anchor.diff:  %% @doc Body producing function for
   %% 	`GET /usageManagement/v1/usageSpecification'
   %% 	requests.
  +%% @todo http transfer usage spec
   get_usagespec([] = _Query) ->
   	RespHeaders = [{content_type, "application/json"}],
   	Body = mochijson:encode({array, [spec_aaa_auth(),
  
positive.code: 	{ok, RespHeaders, Body};
  get_usagespec("PublicWLANAccessUsageSpec", _Query) ->
  	{error, 400};
  get_usagespec(_Id, _Query) ->
  	{error, 404}.
  
  
negative.code: 			{ok, RespHeaders, Body};
  		{_, {_, "PublicWLANAccessUsageSpec"}, _} ->
  			{error, 400};
  		{_, {_, "HTTPTransferUsageSpec"}, []} ->
  			Body = mochijson:encode({array, [spec_http_transfer()]}),
  			{ok, RespHeaders, Body};
  		false ->
  			{error, 404};
  		_ ->
  