func checkListPartsArgs(ctx context.Context, bucket, object, uploadID string) error {
	return checkMultipartObjectArgs(ctx, bucket, object, uploadID)
}

// Checks for CompleteMultipartUpload arguments validity, also validates if bucket exists.
func checkCompleteMultipartArgs(ctx context.Context, bucket, object, uploadID string) error {
	return checkMultipartObjectArgs(ctx, bucket, object, uploadID)
}

	part2Checksum := NewChecksumFromData(checksumType, part2Data)
	part3Checksum := NewChecksumFromData(checksumType, part3Data)

	// Combine the raw checksums (this is what happens in CompleteMultipartUpload)
	var checksumCombined []byte
	checksumCombined = append(checksumCombined, part1Checksum.Raw...)
	checksumCombined = append(checksumCombined, part2Checksum.Raw...)

				xhttp.IfNoneMatch: "*",
			},
			CheckPrecondFn: func(oi ObjectInfo) bool {
				return oi.ETag != ""
			},
		}

		parts := []CompletePart{{PartNumber: 1, ETag: md5Hex}}
		_, err := obj.CompleteMultipartUpload(ctx, bucket, object, res.UploadID, parts, opts)
		if !isErrReadQuorum(err) {
			t.Errorf("Expected read quorum error, got: %v", err)
		}
	})

const (
	DefaultBitrotAlgorithm = HighwayHash256S
)

// ObjectPartInfo Info of each part kept in the multipart metadata
// file after CompleteMultipartUpload() is called.
type ObjectPartInfo struct {
	ETag       string            `json:"etag,omitempty" msg:"e"`
	Number     int               `json:"number" msg:"n"`

)

func TestGetHistogramMetrics_BucketCount(t *testing.T) {
	histBuckets := []float64{0.05, 0.1, 0.25, 0.5, 0.75}
	labels := []string{"GetObject", "PutObject", "CopyObject", "CompleteMultipartUpload"}
	ttfbHist := prometheus.NewHistogramVec(
		prometheus.HistogramOpts{
			Name:    "s3_ttfb_seconds",
			Help:    "Time taken by requests served by current MinIO server instance",
			Buckets: histBuckets,
		},