String stringToSign = SignatureUtils.awsV4BuildStringToSign( requestSignatureVersion, canonicalRequestString, timestampISO8601, region);
String stringToSign = SignatureUtils.awsV4BuildStringToSign( requestSignatureVersion, canonicalRequestString, timestampISO8601, region);
String stringToSign = SignatureUtils.awsV4BuildStringToSign( requestSignatureVersion, canonicalRequestString, timestampISO8601, region);
String stringToSign = SignatureUtils.awsV4BuildStringToSign( requestSignatureVersion, canonicalRequestString, timestampISO8601, region);