code: func ParseQOSReserved(m map[string]string) (*map[v1.ResourceName]int64, error) {
  	reservations := make(map[v1.ResourceName]int64)
  	for k, v := range m {
  		switch v1.ResourceName(k) {
  		// Only memory resources are supported.
  		case v1.ResourceMemory:
  			q, err := parsePercentage(v)
  			if err != nil {
  				return nil, err
  			}
  			reservations[v1.ResourceName(k)] = q
  		default:
  			return nil, fmt.Errorf("cannot reserve %q resource", k)
  		}
  	}
  	return &reservations, nil
  }
docs: // ParseQOSReserved parses the --qos-reserve-requests option