code: func CapacityBreakDown(capacityBytes int64) string {
  	n := int64(math.Ceil(float64(capacityBytes) / float64(500*esUtil.GiB)))
  	return fmt.Sprintf("%dG", n*500)
  }
docs: // CapacityBreakDown breaks capacity down into every 500G, e.g.
  //	[0]: 0G
  //	(0, 500G]: 500G
  //	(500G, 1000G]: 1000G
  //	(1000G, 1500G]: 1500G