docs: function link(mode, target, system, containerDef, container, out, cb) {
      logger.info('linking');
      out.stdout('linking');
  
      var elb = findParentELB(system, container);
  
      if (elb) {
        logger.info(elb, 'elb found');
        linkToELB(mode, system, elb, container, out, cb);
      } else {
        logger.info('elb not found');
        cb(null, system);
      }
    }