* The value is, e.g. default <br>
     * comment: Search Engine
     * @return The value of found property. (NotNull: if not found, exception but basically no way)
     */
    String getSearchEngineType();

    /**
     * Get the value for the key 'search_engine.http.url'. <br>
     * The value is, e.g. http://localhost:9201 <br>