const mapEntryOverhead = 200

	var (
		reader        io.Reader
		fileSize      int64 = -1
		fileName      string
		fanOutEntries = make([]minio.PutObjectFanOutEntry, 0, 100)
	)

	maxParts := 1000
	// Canonicalize the form values into http.Header.
	formValues := make(http.Header)
	for {
		part, err := mp.NextRawPart()
		if errors.Is(err, io.EOF) {
			break
		}
		if err != nil {