return nil
}

// GetCgroupSubsystems returns information about the mounted cgroup subsystems
func GetCgroupSubsystems() (*CgroupSubsystems, error) {
	return nil, nil
}

func getCgroupProcs(dir string) ([]int, error) {
	return nil, nil
}

// GetPodCgroupNameSuffix returns the last element of the pod CgroupName identifier
func GetPodCgroupNameSuffix(podUID types.UID) string {
	return ""
}

		return getCgroupSubsystemsV2()
	}

	return getCgroupSubsystemsV1()
}

// getCgroupProcs takes a cgroup directory name as an argument
// reads through the cgroup's procs file and returns a list of tgid's.
// It returns an empty list if a procs file doesn't exists
func getCgroupProcs(dir string) ([]int, error) {
	procsFile := filepath.Join(dir, "cgroup.procs")
	f, err := os.Open(procsFile)

		if os.IsNotExist(err) {
			// The subsystem pod cgroup is already deleted
			// do nothing, continue
			continue
		}
		// Get a list of pids that are still charged to the pod's cgroup
		pids, err = getCgroupProcs(dir)
		if err != nil {
			continue
		}
		pidsToKill.Insert(pids...)

		// WalkFunc which is called for each file and directory in the pod cgroup dir