func (a sandboxByCreated) Less(i, j int) bool { return a[i].createTime.After(a[j].createTime) }

// enforceMaxContainersPerEvictUnit enforces MaxPerPodContainer for each evictUnit.
func (cgc *containerGC) enforceMaxContainersPerEvictUnit(ctx context.Context, evictUnits containersByEvictUnit, MaxContainers int) {
	for key := range evictUnits {
		toRemove := len(evictUnits[key]) - MaxContainers