uploadID:         uploadID,
			copySourceHeader: url.QueryEscape(SlashSeparator + bucketName + SlashSeparator + testObject),
			accessKey:        credentials.AccessKey,
			secretKey:        credentials.SecretKey,

			expectedRespStatus: http.StatusNotFound,
		},

		// Test case - 4.
		// Test case with valid byte range.
		{
			bucketName:       bucketName,
			uploadID:         uploadID,

)

// optimalPartInfo - calculate the optimal part info for a given
// object size.
//
// NOTE: Assumption here is that for any object to be uploaded to any S3 compatible
// object storage it will have the following parameters as constants.
//
//	maxPartsCount - 10000
//	maxMultipartPutObjectSize - 5TiB
func optimalPartSize(objectSize int64) (partSize int64, err error) {

from starlette.datastructures import State as State  # noqa: F401
from starlette.datastructures import UploadFile as StarletteUploadFile


class UploadFile(StarletteUploadFile):
    """
    A file uploaded in a request.

    Define it as a *path operation function* (or dependency) parameter.

    If you are using a regular `def` function, you can use the `upload_file.file`

	}

	// Cleanup all uploaded parts.
	defer er.deleteAll(ctx, minioMetaMultipartBucket, er.getUploadIDDir(bucket, object, uploadID))

	// Validates if upload ID exists.
	_, _, err = er.checkUploadIDExists(ctx, bucket, object, uploadID, false)
	return toObjectErr(err, bucket, object, uploadID)

	partKey := key.DerivePartKey(uint32(partID))
	return EncryptSinglePart(r, ObjectKey(partKey))
}

// DecryptSinglePart decrypts an io.Writer which must an object
// uploaded with the single-part PUT API. The offset and length
// specify the requested range.
func DecryptSinglePart(w io.Writer, offset, length int64, key ObjectKey) io.WriteCloser {
	const PayloadSize = 1 << 16 // DARE 2.0

	// no other caller must set this value other than multi-object delete call.
	// usage in other calls in undefined please avoid.
	Idx int `msg:"i"`

	// Combined checksum when object was uploaded.
	Checksum []byte `msg:"cs,allownil"`

	// Versioned - indicates if this file is versioned or not.
	Versioned bool `msg:"vs"`
}

func (fi FileInfo) shardSize() int64 {

					}
					keys = keys[1:]
				}
				batch[i].ETag = ETag.Format().String()
			}
		}
		objects = objects[N:]
	}
	return nil
}

// isMultipart returns true if the current object is
// uploaded by the user using multipart mechanism:
// initiate new multipart, upload part, complete upload
func (o *ObjectInfo) isMultipart() bool {
	_, encrypted := crypto.IsEncrypted(o.UserDefined)
	if encrypted {

		Bucket:   bucket,
		Object:   object,
		UploadID: uploadID,
	}
}

// ListObjectParts - lists all uploaded parts to an object in hashedSet.
func (z *erasureServerPools) ListObjectParts(ctx context.Context, bucket, object, uploadID string, partNumberMarker int, maxParts int, opts ObjectOptions) (ListPartsInfo, error) {
	if err := checkListPartsArgs(ctx, bucket, object, uploadID); err != nil {
		return ListPartsInfo{}, err
	}

		return
	}

	if keyName, ok := formValues["Key"]; !ok {
		apiErr := errorCodes.ToAPIErr(ErrMalformedPOSTRequest)
		apiErr.Description = fmt.Sprintf("%s (%v)", apiErr.Description, errors.New("The name of the uploaded key is missing"))
		writeErrorResponse(ctx, w, apiErr, r.URL)
		return
	} else if fileName == "" && len(keyName) >= 1 {
		// if we can't get fileName. We use keyName[0] to fileName
		fileName = keyName[0]
	}

		if partNumberMarker, err = strconv.Atoi(values.Get("part-number-marker")); err != nil {
			errCode = ErrInvalidPartNumberMarker
			return uploadID, partNumberMarker, maxParts, encodingType, errCode
		}
	}

	uploadID = values.Get("uploadId")
	encodingType = values.Get("encoding-type")
	return uploadID, partNumberMarker, maxParts, encodingType, errCode