anchor.diff:  
   retry(Op, Request, Retries, Start, Opts) ->
       RequestStart = os:timestamp(),
  -    case do(Op, Request, timeout(Opts)) of
  +    case do(Op, Request, Opts) of
           {ok, Response} ->
   
               case proplists:get_value(<<"ConsumedCapacity">>,
  
positive.code: 
  
  
  do(Operation, {UserRequest}, Timeout) ->
      Now = edatetime:now2ts(),
  
      Request = {lists:keystore(<<"ReturnConsumedCapacity">>, 1, UserRequest,
  
negative.code: 
      URL = <<"http://dynamodb.", (endpoint())/binary, ".amazonaws.com/">>,
      Headers = [
                 {<<"Host">>, <<"dynamodb.", (endpoint())/binary,
                                ".amazonaws.com">>},
                 {<<"Content-Type">>, <<"application/x-amz-json-1.0">>},
                 {<<"x-amz-date">>, edatetime:iso8601(Now)},
                 {<<"x-amz-target">>, target(Operation)}
                ],
      Signed = [{<<"Authorization">>, authorization(Headers, Body, Now)}
                | Headers],
  
      ServerTimeout = proplists:get_value(server_timeout, Opts, 5000),
      CallTimeout = proplists:get_value(server_timeout, Opts, 10000),
      ClaimTimeout = proplists:get_value(claim_timeout, Opts, 1000), %% us
  
      case party:post(URL, Signed, Body, [{server_timeout, ServerTimeout},
                                          {call_timeout, CallTimeout},
                                          {claim_timeout, ClaimTimeout}]) of
          {ok, {{200, <<"OK">>}, _, ResponseBody}} ->
              {ok, jiffy:decode(ResponseBody)};
  
  