code: public OperationFuture<List<LoadBalancer>> delete(LoadBalancerFilter filter) {
          List<LoadBalancer> loadBalancerList = findLazy(filter)
                  .map(metadata -> LoadBalancer.refById(
                      metadata.getId(),
                      DataCenter.refById(metadata.getDataCenterId()))
                  )
                  .collect(toList());
  
          return delete(loadBalancerList);
      }
docs: Delete filtered load balancers
  
  @param filter load balancer filter
  @return OperationFuture wrapper for load balancer list