"rules_path": "${fess.dictionary.path}pt-br/stemmer_override.txt"
        },
        "bulgarian_stop": {
          "type":       "stop",
          "stopwords_path": "${fess.dictionary.path}bg/stopwords.txt"
        },
        "bulgarian_keywords": {
          "type":       "keyword_marker",
          "keywords":   ["пример"]
        },
        "bulgarian_stemmer": {
          "type":       "stemmer",