ChecksumSHA256
	// ChecksumSHA1 indicates a SHA-1 checksum.
	ChecksumSHA1
	// ChecksumCRC32 indicates a CRC32 checksum with IEEE table.
	ChecksumCRC32
	// ChecksumCRC32C indicates a CRC32 checksum with Castagnoli table.
	ChecksumCRC32C
	// ChecksumInvalid indicates an invalid checksum.
	ChecksumInvalid
	// ChecksumMultipart indicates the checksum is from a multipart upload.
	ChecksumMultipart

type Part struct {
	PartNumber   int
	LastModified string
	ETag         string
	Size         int64

	// Checksum values
	ChecksumCRC32  string `xml:"ChecksumCRC32,omitempty"`
	ChecksumCRC32C string `xml:"ChecksumCRC32C,omitempty"`
	ChecksumSHA1   string `xml:"ChecksumSHA1,omitempty"`
	ChecksumSHA256 string `xml:"ChecksumSHA256,omitempty"`
}

// ListPartsResponse - format for list parts response.

			if crc == "" {
				return oi, InvalidPart{
					PartNumber: part.PartNumber,
				}
			}
			wantCS := map[string]string{
				hash.ChecksumCRC32.String():  part.ChecksumCRC32,
				hash.ChecksumCRC32C.String(): part.ChecksumCRC32C,
				hash.ChecksumSHA1.String():   part.ChecksumSHA1,
				hash.ChecksumSHA256.String(): part.ChecksumSHA256,
			}
			if wantCS[checksumType.String()] != crc {
				return oi, InvalidPart{

			}
			parts[i] = CompletePart{
				ETag:           pi.ETag,
				PartNumber:     pi.PartNumber,
				ChecksumCRC32:  pi.ChecksumCRC32,
				ChecksumCRC32C: pi.ChecksumCRC32C,
				ChecksumSHA256: pi.ChecksumSHA256,
				ChecksumSHA1:   pi.ChecksumSHA1,
			}
		}
		_, err = z.CompleteMultipartUpload(ctx, bucket, objInfo.Name, res.UploadID, parts, ObjectOptions{

		}
		uploadedParts = append(uploadedParts, minio.CompletePart{
			PartNumber:     pInfo.PartNumber,
			ETag:           pInfo.ETag,
			ChecksumCRC32:  pInfo.ChecksumCRC32,
			ChecksumCRC32C: pInfo.ChecksumCRC32C,
			ChecksumSHA1:   pInfo.ChecksumSHA1,
			ChecksumSHA256: pInfo.ChecksumSHA256,
		})
	}
	userMeta := map[string]string{

		// AWS does not appear to append part number on this API call.
		if len(chkSums) > 0 {
			OA.Checksum = &objectAttributesChecksum{
				ChecksumCRC32:  strings.Split(chkSums["CRC32"], "-")[0],
				ChecksumCRC32C: strings.Split(chkSums["CRC32C"], "-")[0],
				ChecksumSHA1:   strings.Split(chkSums["SHA1"], "-")[0],
				ChecksumSHA256: strings.Split(chkSums["SHA256"], "-")[0],
			}
		}
	}