gured
        to operate in safe-link mode. The safe mode is activated by default, but
        it can be also explicitly activated:
      </p>
<pre class="programlisting"><span class="comment">//Configuring the safe mode explicitly</span>
<span class="keyword">class</span> <span class="identifier">Foo</span> <span class="special">:</span> <span class="keyword">public</span> <span class="identifier">list_base_hook</span><span class="special">&lt;</span> <span class="identifier">link_mode</span><span class="s