public static FileBackedOutputStream transferToFbos(@NotNull InputPart part, long sizeLimitBytes)
         throws IOException {
        var fbos = new FileBackedOutputStream(FBOS_THRESHOLD_BYTES);
        transferData(part.getBody(InputStream.class, null), fbos, sizeLimitBytes);
        return fbos;
    }
@author Marc Savy {@literal <marc@blackparrotlabs.io>}
manager/api/rest-impl/src/main/java/io/apiman/manager/api/rest/impl/util/MultipartHelper.java