o">295</span>    } // end method 'toString()'<a name="line.295"></a>
<span class="sourceLineNo">296</span><a name="line.296"></a>
<span class="sourceLineNo">297</span>    /**<a name="line.297"></a>
<span class="sourceLineNo">298</span>     * Wraps the passed value.<a name="line.298"></a>
<span class="sourceLineNo">299</span>     * @param w0 wrapper for first parameter - should not be {@code null}<a name="line.299"></a>
<span class="sourceLineNo">300</span>     * @param w1 wrapper for second parameter - shou