docs: public ObjectStat statObject(String bucketName, String objectName)
      throws InvalidBucketNameException, NoSuchAlgorithmException, InsufficientDataException, IOException,
             InvalidKeyException, NoResponseException, XmlPullParserException, ErrorResponseException,
             InternalException {
      HttpResponse response = executeHead(bucketName, objectName);
      ResponseHeader header = response.header();
      Map<String,List<String>> httpHeaders = response.httpHeaders();
      ObjectStat objectStat = new ObjectStat(bucketName, objectName, header, httpHeaders);
  
      return objectStat;
    }