return configIndex + "." + new SimpleDateFormat(Constants.DOCUMENT_INDEX_SUFFIX_PATTERN).format(new Date());
    }

    /**
     * Inserts bulk data from a file into an index.
     *
     * @param fessConfig  the Fess configuration
     * @param configIndex the target index name
     * @param dataPath    the path to the bulk data file
     */

    static final int O_TRUNC = 0x0040;

    // share access
    /**
     * When specified as the {@code shareAccess} constructor parameter,
     * other SMB clients (including other threads making calls into jCIFS)
     * will not be permitted to access the target file and will receive "The
     * file is being accessed by another process" message.
     */
    public static final int FILE_NO_SHARE = 0x00;
    /**

          "name": "possessive_english"
        },
        "stopword_en_filter": {
          "type": "stop",
          "stopwords": ["a", "an", "and", "are", "as", "at", "be", "but", "by", "for", "if", "in", "into", "is", "it", "no", "not", "of", "on", "or", "such", "that", "the", "their", "then", "there", "these", "they", "this", "to", "was", "will", "with"]
        },
        "arabic_stop": {
          "type":       "stop",

          "name": "possessive_english"
        },
        "stopword_en_filter": {
          "type": "stop",
          "stopwords": ["a", "an", "and", "are", "as", "at", "be", "but", "by", "for", "if", "in", "into", "is", "it", "no", "not", "of", "on", "or", "such", "that", "the", "their", "then", "there", "these", "they", "this", "to", "was", "will", "with"]
        },
        "arabic_stop": {
          "type":       "stop",