">,</span> <span class="identifier">D</span> <span class="special">&gt;</span><span class="special">&gt;</span> <span class="special">{</span>
  <span class="comment">// types</span>
  <span class="keyword">typedef</span> <a class="link" href="unit.html" title="Class template unit">unit</a><span class="special">&lt;</span> <span class="keyword">typename</span> <a class="link" href="static_power.html" title="Struct template static_power">static_power</a><span class="special">&lt;</span> <span class="identifi