"keywords_path": "${fess.dictionary.path}ar/protwords.txt"
        },
        "arabic_stemmer": {
          "type":       "stemmer",
          "language":   "arabic"
        },
        "arabic_override": {
          "type":       "stemmer_override",
          "rules_path": "${fess.dictionary.path}ar/stemmer_override.txt"
        },
        "armenian_stop": {
          "type":       "stop",