"type": "mapping",
          "mappings_path": "${fess.dictionary.path}mapping.txt"
        },
        "traditional_chinese_convert": {
          "type": "fess_traditional_chinese_convert",
          "convert_type": "t2s"
        },
        "zero_width_spaces": {
            "type":       "mapping",
            "mappings": [ "\\u200C=> "]
        },
        "removeall_filter": {
          "type": "pattern_replace",

            try {
                final String resourceName = params == null ? null : params.get(ExtractData.RESOURCE_NAME_KEY);
                final String contentType = params == null ? null : params.get(ExtractData.CONTENT_TYPE);
                String contentEncoding = params == null ? null : params.get(ExtractData.CONTENT_ENCODING);

        final Map<String, String> params = new HashMap<>(crawlingConfig.getConfigParameterMap(ConfigName.CONFIG));
        params.put(ExtractData.RESOURCE_NAME_KEY, getResourceName(responseData));
        params.put(ExtractData.CONTENT_TYPE, responseData.getMimeType());
        params.put(ExtractData.CONTENT_ENCODING, responseData.getCharSet());
        params.put(ExtractData.URL, responseData.getUrl());