}));

        facetCache = CacheBuilder.newBuilder().maximumSize(1000).expireAfterWrite(facetCacheDuration, TimeUnit.SECONDS).build();

        textFragmentPrefixLength = fessConfig.getQueryHighlightTextFragmentPrefixLengthAsInteger();
        textFragmentSuffixLength = fessConfig.getQueryHighlightTextFragmentSuffixLengthAsInteger();
        textFragmentSize = fessConfig.getQueryHighlightTextFragmentSizeAsInteger();

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

    /**
     * Get the value for the key 'query.highlight.text.fragment.suffix.length'. <br>
     * The value is, e.g. 5 <br>