final String roleFieldName, final String langFieldName, final String[] badWords) {
        this.index = index;
        this.supportedFields = supportedFields;
        this.tagFieldNames = tagFieldNames;
        this.roleFieldName = roleFieldName;
        this.langFieldName = langFieldName;
        this.badWords = badWords;
    }

    /**
     * Returns the index name.

     * @param fields The fields to extract from the document.
     * @param tagFieldNames The names of the fields that contain tags.
     * @param roleFieldName The name of the field that contains role information.
     * @param langFieldName The name of the field that contains language information.
     * @param readingConverter The converter to use for reading fields.
     * @param contentsReadingConverter The converter to use for reading content fields.