code: func (f *FakeCloud) UpdateLoadBalancer(ctx context.Context, clusterName string, service *v1.Service, nodes []*v1.Node) error {
  	f.addCall("update")
  	f.UpdateCalls = append(f.UpdateCalls, FakeUpdateBalancerCall{service, nodes})
  	return f.Err
  }
docs: // UpdateLoadBalancer is a test-spy implementation of LoadBalancer.UpdateLoadBalancer.
  // It adds an entry "update" into the internal method call record.