.maxExpansions(fessConfig.getQueryFuzzyExpansionsAsInteger())
                            .prefixLength(fessConfig.getQueryFuzzyPrefixLengthAsInteger())
                            .transpositions(Constants.TRUE.equalsIgnoreCase(fessConfig.getQueryFuzzyTranspositions())));
        }

        if (isSearchField(field)) {

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

    /**
     * Get the value for the key 'query.fuzzy.expansions'. <br>
     * The value is, e.g. 50 <br>