code: public Properties getProperties() {
          Properties props = new Properties();
          try (FileInputStream in = new FileInputStream(getPropertiesFile())) {
              props.load(in);
          } catch (IOException e) {
              Exceptions.ignore(e);
          }
          return props;
      }
docs: Returns all properties stored along with the object.
  <p>
  This is the Content-MD5, Content-Type and any x-amz-meta- header.
  </p>
  
  @return a set of name value pairs representing all properties stored for this object or an empty set if no
  properties could be read.