code: func (cs *CSCloud) EnsureLoadBalancerDeleted(ctx context.Context, clusterName string, service *v1.Service) error {
  	klog.V(4).Infof("EnsureLoadBalancerDeleted(%v, %v, %v)", clusterName, service.Namespace, service.Name)
  
  	// Get the load balancer details and existing rules.
  	lb, err := cs.getLoadBalancer(service)
  	if err != nil {
  		return err
  	}
  
  	for _, lbRule := range lb.rules {
  		klog.V(4).Infof("Deleting load balancer rule: %v", lbRule.Name)
  		if err := lb.deleteLoadBalancerRule(lbRule); err != nil {
  			return err
  		}
  	}
  
  	if lb.ipAddr != "" && lb.ipAddr != service.Spec.LoadBalancerIP {
  		klog.V(4).Infof("Releasing load balancer IP: %v", lb.ipAddr)
  		if err := lb.releaseLoadBalancerIP(); err != nil {
  			return err
  		}
  	}
  
  	return nil
  }
docs: // EnsureLoadBalancerDeleted deletes the specified load balancer if it exists, returning
  // nil if the load balancer specified either didn't exist or was successfully deleted.