//  boost
        putResultDataBody(dataMap, fessConfig.getIndexFieldBoost(), crawlingConfig.getDocumentBoost());
        // label: labelType
        putResultDataBody(dataMap, fessConfig.getIndexFieldLabel(), labelTypeHelper.getMatchedLabelValueSet(url));
        // role: roleType
        final List<String> roleTypeList = new ArrayList<>();

     * The value is, e.g. label <br>
     * comment: Field name for label in the index.
     * @return The value of found property. (NotNull: if not found, exception but basically no way)
     */
    String getIndexFieldLabel();

    /**
     * Get the value for the key 'index.field.mimetype'. <br>
     * The value is, e.g. mimetype <br>
     * comment: Field name for MIME type in the index.