>&#160;            &gt;&gt;();</div><div class="line"><a name="l00074"></a><span class="lineno">   74</span>&#160;</div><div class="line"><a name="l00075"></a><span class="lineno">   75</span>&#160;        <span class="keyword">using</span> const_t = <span class="keyword">typename</span> D::const_t;</div><div class="line"><a name="l00076"></a><span class="lineno">   76</span>&#160;        gil_function_requires&lt;PixelDereferenceAdaptorConcept&lt;const_t&gt;&gt;();</div><div class="line"><a name="l00077"></