code: public static <T> T populateUsermeta(RiakUserMetadata usermetaData, T domainObject)
      {
          return AnnotationHelper.getInstance().setUsermetaData(usermetaData, domainObject);
      }
docs: Attempts to populate a domain object with user metadata by looking for a
  {@literal @RiakUsermeta} annotated member.
  
  @param <T> the type of the domain object
  @param usermetaData a Map of user metadata.
  @param domainObject the domain object.
  @return the domain object.