class="comment">// -----------------------------------------------------------------------</span></div>
<div class="line"><a name="l00060"></a><span class="lineno">   60</span>&#160;    <span class="comment">// Unimplemented constructors and operators</span></div>
<div class="line"><a name="l00061"></a><span class="lineno">   61</span>&#160;    <span class="comment">// -----------------------------------------------------------------------</span></div>
<div class="line"><a name="l00064"></a><span class="lin