docs: public String getObjectUrl(String bucketName, String objectName)
      throws InvalidBucketNameException, NoSuchAlgorithmException, InsufficientDataException, IOException,
             InvalidKeyException, NoResponseException, XmlPullParserException, ErrorResponseException,
             InternalException {
      Request request = createRequest(Method.GET, bucketName, objectName, getRegion(bucketName),
          null, null, null, null, 0);
      HttpUrl url = request.url();
      return url.toString();
    }