type Interface interface {
	// GetQuotaOnDir gets the quota ID (if any) that applies to
	// this directory
	GetQuotaOnDir(m mount.Interface, path string) (common.QuotaID, error)

	// Does the path provided support quotas, and if so, what types
	SupportsQuotas(m mount.Interface, path string) (bool, error)
	// Assign a quota (picked by the quota mechanism) to a path,
	// and return it.
	AssignQuota(m mount.Interface, path string, poduid types.UID, bytes *resource.Quantity) error

	// Get the quota-based storage consumption for the path
	GetConsumption(path string) (*resource.Quantity, error)

	// Get the quota-based inode consumption for the path
	GetInodes(path string) (*resource.Quantity, error)

	// Remove the quota from a path
	// Implementations may assume that any data covered by the
	// quota has already been removed.
	ClearQuota(m mount.Interface, path string) error
}