const (
    StorageClassStandard           StorageClass = StorageClass(SDK.StorageClassStandard)
    StorageClassReducedRedundancy  StorageClass = StorageClass(SDK.StorageClassReducedRedundancy)
    StorageClassStandardIa         StorageClass = StorageClass(SDK.StorageClassStandardIa)
    StorageClassOnezoneIa          StorageClass = StorageClass(SDK.StorageClassOnezoneIa)