docs: function start() {
  
    var donePromise = mediator.promise(resultSyncSubscribers.getTopic(CONSTANTS.TOPICS.START, CONSTANTS.DONE_PREFIX));
  
    var errorPromise = mediator.promise(resultSyncSubscribers.getTopic(CONSTANTS.TOPICS.START, CONSTANTS.ERROR_PREFIX));
  
    mediator.publish(resultSyncSubscribers.getTopic(CONSTANTS.TOPICS.START));
  
    return getTopicPromises(donePromise, errorPromise);
  }