n> <span class="keyword">for</span> <span class="identifier">an</span> <span class="identifier">inner</span> <span class="keyword">enum</span> <span class="identifier">called</span> <span class="identifier">MyType</span><span class="special">.</span>

<span class="identifier">has_enum_MyType</span><span class="special">&lt;</span><span class="identifier">EnclosingType</span><span class="special">&gt;</span><span class="special">::</span><span class="identifier">value</span> <span class="identifier">is</span