  const ViewList&amp; getChildren () const;</div><div class="line"><a name="l00232"></a><span class="lineno">  232</span>&#160;private:</div><div class="line"><a name="l00233"></a><span class="lineno">  233</span>&#160;    struct Impl;</div><div class="line"><a name="l00234"></a><span class="lineno">  234</span>&#160;    std::unique_ptr&lt;Impl&gt; pImpl;</div><div class="line"><a name="l00235"></a><span class="lineno">  235</span>&#160;};</div><div class="line"><a name="l00236"></a><span class="lineno">  2