if actualErr == nil && testCase.shouldPass {
			expectedResult := testCase.expectedResult
			// Asserting the MaxParts.
			if actualResult.MaxParts != expectedResult.MaxParts {
				t.Errorf("Test %d: %s: Expected the MaxParts to be %d, but instead found it to be %d", i+1, instanceType, expectedResult.MaxParts, actualResult.MaxParts)
			}
			// Asserting Object Name.
			if actualResult.Object != expectedResult.Object {

			if err != nil {
				err = msgp.WrapError(err, "NextPartNumberMarker")
				return
			}
		case "MaxParts":
			z.MaxParts, bts, err = msgp.ReadIntBytes(bts)
			if err != nil {
				err = msgp.WrapError(err, "MaxParts")
				return
			}
		case "IsTruncated":
			z.IsTruncated, bts, err = msgp.ReadBoolBytes(bts)
			if err != nil {

			writeErrorResponse(ctx, w, apiErr, r.URL)
			return
		}
		if maxParts <= 0 {
			apiErr := errorCodes.ToAPIErr(ErrMalformedPOSTRequest)
			apiErr.Description = fmt.Sprintf("%s (%v)", apiErr.Description, multipart.ErrMessageTooLarge)
			writeErrorResponse(ctx, w, apiErr, r.URL)
			return
		}
		maxParts--

		name := part.FormName()
		if name == "" {
			continue
		}

	if z.SinglePool() {
		return z.serverPools[0].ListObjectParts(ctx, bucket, object, uploadID, partNumberMarker, maxParts, opts)
	}

	for idx, pool := range z.serverPools {
		if z.IsSuspended(idx) {
			continue
		}
		result, err := pool.ListObjectParts(ctx, bucket, object, uploadID, partNumberMarker, maxParts, opts)
		if err == nil {
			return result, nil
		}
		if _, ok := err.(InvalidUploadID); ok {

}

// return URL for a listing parts on a given upload id.
func getListMultipartURLWithParams(endPoint, bucketName, objectName, uploadID, maxParts, partNumberMarker, encoding string) string {
	queryValues := url.Values{}
	queryValues.Set("uploadId", uploadID)
	queryValues.Set("max-parts", maxParts)
	if partNumberMarker != "" {
		queryValues.Set("part-number-marker", partNumberMarker)
	}