partNumber := partI.Number
		if partID != partNumber {
			internalLogIf(ctx, fmt.Errorf("part.%d.meta has incorrect corresponding part number: expected %d, got %d", partID, partID, partI.Number))
			return oi, InvalidPart{
				PartNumber: partID,
			}
		}

		// Add the current part.
		fi.AddObjectPart(partI.Number, partI.ETag, partI.Size, partI.ActualSize, partI.ModTime, partI.Index, partI.Checksums)
	}

	// Create multipart parts.
	// Need parts to be uploaded before CompleteMultiPartUpload can be called tested.
	parts := []struct {
		bucketName      string
		objName         string
		uploadID        string
		PartID          int
		inputReaderData string
		inputMd5        string
		inputDataSize   int64
	}{
		// Case 1-4.
		// Creating sequence of parts for same uploadID.

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