/**
   * @param aggregatedVoteE
   * @return
   */
  public static Vote aggregatedVoteEntityToVoteMessage(AggregatedVoteE aggregatedVoteE) {

    // basic mapping for general vote entities
    Vote vote = voteEntityToVoteMessage(aggregatedVoteE);

    // map additional specific base attributes
    vote.setAggregation(true);

    if (aggregatedVoteE.getAggregationType() != null) {
      vote.setAggregationType(aggregatedVoteE.getAggregationType());
    } else {
      log.error("Required attribute 'aggregationType' missing");
      return null;
    }

    if (aggregatedVoteE.getClusterId() != null) {
      vote.setClusterId(aggregatedVoteE.getClusterId());
    } else {
      log.error("Required attribute 'clusterId' missing");
      return null;
    }

    // generate url links
    vote.setConfigurationUrl(genConfigUrl(aggregatedVoteE));
    vote.setVoteUrl(genUrl(aggregatedVoteE));
    vote.setEvaluationUrl(EvaluationMapper.genUrl(aggregatedVoteE.getAggregatorEvaluation()));

    return vote;
  }