span class="keyword">enum</span> <span class="identifier">of</span> <span class="identifier">EnclosingType</span>
  <span class="identifier">and</span> <span class="identifier">invoking</span> <span class="identifier">ALambdaExpression</span> <span class="identifier">with</span> <span class="identifier">the</span> <span class="identifier">inner</span> <span class="keyword">enum</span> <span class="identifier">returns</span> <span class="identifier">a</span> <span class="identifier">value</span> <span class=