@Override
    public List<MetaData> convert(final String json) {
        return GsonUtils.getInstance().fromList(json, MetaData.class);
    }
@Test
    public void testConvert() {
        List<MetaData> metaDataList = new LinkedList<>();
        metaDataList.add(MetaData.builder().id("1").appName("appName1").enabled(true).build());
        metaDataList.add(MetaData.builder().id("1").appName("appName2").methodName("POST").build());
        Gson gson = new Gson();
        String json = gson.toJson(metaDataList);
        List<MetaData> convertedList = metaDataHandler.convert(json);
        assertThat(convertedList, is(metaDataList));
    }