final SearchEngineClient client = new SearchEngineClient() {
            @Override
            public boolean update(final String index, final String id, final String field, final Object value) {
                resultMap.put("index", index);
                resultMap.put("id", id);
                resultMap.put("field", field);
                resultMap.put("value", value.toString());
                return true;
            }
        };

     *
     * @param body the general settings data to update
     * @return JSON response with update status
     */
    @Execute
    public JsonResponse<ApiResult> put$index(final EditBody body) {
        validateApi(body, messages -> {});
        final EditBody newBody = new EditBody();
        AdminGeneralAction.updateForm(fessConfig, newBody);

        for (int i = 0; i < 10; i++) {
            Map<String, Object> doc = new HashMap<>();
            doc.put("id", String.valueOf(i));
            doc.put("index", i);
            builder.addDocument(doc);
        }

        SearchResult result = builder.allRecordCount(10L).build();

        assertEquals(10, result.getDocumentList().size());

        final int i = ((inData[inIndex] & 0xff) << 16) + ((inData[inIndex + 1] & 0xff) << 8) + (inData[inIndex + 2] & 0xff);
        outData[outIndex] = ENCODE_TABLE[i >> 18];
        outData[outIndex + 1] = ENCODE_TABLE[i >> 12 & 0x3f];
        outData[outIndex + 2] = ENCODE_TABLE[i >> 6 & 0x3f];
        outData[outIndex + 3] = ENCODE_TABLE[i & 0x3f];
    }