/**
     * Get the value for the key 'search_engine.password'. <br>
     * The value is, e.g.  <br>
     * @return The value of found property. (NotNull: if not found, exception but basically no way)
     */
    String getSearchEnginePassword();

    /**
     * Get the value for the key 'search_engine.password' as {@link Integer}. <br>
     * The value is, e.g.  <br>