deleteScrollContext(scrollId);
        }
        return count;
    }

    /**
     * Deletes a scroll context to free resources.
     *
     * @param scrollId the scroll ID to delete
     */
    protected void deleteScrollContext(final String scrollId) {
        if (scrollId != null) {
            client.prepareClearScroll()
                    .addScrollId(scrollId)

            if (logger.isDebugEnabled()) {
                logger.debug("Failed to process a scroll request.", e);
            }
            writeJsonResponse(HttpServletResponse.SC_BAD_REQUEST, e);
        } catch (final Exception e) {
            if (logger.isDebugEnabled()) {
                logger.debug("Failed to process a scroll request.", e);
            }

api.access.token.request.parameter=
# Permissions for API admin access.
api.admin.access.permissions=Radmin-api
# Accepted referers for API search.
api.search.accept.referers=
# Whether to enable scroll for API search.
api.search.scroll=false
# Headers for API JSON response.
api.json.response.headers=Referrer-Policy:strict-origin-when-cross-origin
# Whether to include exceptions in API JSON response.

    /**
     * Get the value for the key 'api.search.scroll'. <br>
     * The value is, e.g. false <br>
     * comment: Whether to enable scroll for API search.
     * @return The value of found property. (NotNull: if not found, exception but basically no way)
     */
    String getApiSearchScroll();

    /**
     * Is the property for the key 'api.search.scroll' true? <br>
     * The value is, e.g. false <br>

        final String index = "fess_basic_config";
        final ZipEntry entry = new ZipEntry(id + "/fess_basic_config.bulk");
        try {
            zos.putNextEntry(entry);
            SearchEngineUtil.scroll(index, hit -> {
                final String data = "{\"index\":{\"_index\":\"" + index + "\",\"_id\":\"" + StringEscapeUtils.escapeJson(hit.getId())
                        + "\"}}\n" + hit.getSourceAsString() + "\n";