final char[] boundaryChars = fessConfig.getQueryHighlightBoundaryCharsAsArray();
            final int boundaryMaxScan = fessConfig.getQueryHighlightBoundaryMaxScanAsInteger();
            final String boundaryScannerType = fessConfig.getQueryHighlightBoundaryScanner();
            final boolean forceSource = fessConfig.isQueryHighlightForceSource();

     * @return The value of found property. (NotNull: if not found, exception but basically no way)
     * @throws NumberFormatException When the property is not integer.
     */
    Integer getQueryHighlightBoundaryMaxScanAsInteger();

    /**
     * Get the value for the key 'query.highlight.boundary.scanner'. <br>
     * The value is, e.g. chars <br>