an> <span class="identifier">To</span><span class="special">&gt;</span>
<span class="keyword">struct</span> <span class="identifier">is_restricted_conversion</span>
<span class="special">{</span>
   <span class="keyword">static</span> <span class="keyword">const</span> <span class="keyword">bool</span> <span class="identifier">value</span> <span class="special">=</span> <span class="identifier">see</span> <span class="identifier">below</span><span class="special">;</span>
<span class="special">};</span>
</p