return DiskFileItemFactory.builder().setBufferSize(sizeThreshold).setFile(repository).get();
    }

    protected int getSizeThreshold() {
        return ComponentUtil.getFessConfig().getHttpFileuploadThresholdSizeAsInteger();
    }

    protected File createRepositoryFile() {
        return new File(getRepositoryPath());
    }

    protected String getRepositoryPath() {

     * @return The value of found property. (NotNull: if not found, exception but basically no way)
     * @throws NumberFormatException When the property is not integer.
     */
    Integer getHttpFileuploadThresholdSizeAsInteger();

    /**
     * Get the value for the key 'http.fileupload.max.file.count'. <br>
     * The value is, e.g. 10 <br>
     * comment: Maximum number of files allowed per HTTP upload.