 <span class="comment">// member classes/structs/unions</span>
  <span class="keyword">template</span><span class="special">&lt;</span><span class="keyword">typename</span> Type<span class="special">&gt;</span> 
  <span class="keyword">struct</span> <a class="link" href="map/on_codomain_model_id672316.html" title="Struct template on_codomain_model&lt;Type, false, false&gt;">on_codomain_model</a><span class="special">&lt;</span><span class="identifier">Type</span><span class="special">,</span> <span class="k