" name="l00030"></a><span class="lineno">   30</span><span class="comment"></span> </div>
<div class="line"><a id="l00031" name="l00031"></a><span class="lineno">   31</span><span class="comment">/**</span></div>
<div class="line"><a id="l00032" name="l00032"></a><span class="lineno">   32</span><span class="comment"> * A documentation-only *concept*: what transport::Blob_sender is to transport::Native_handle_sender (namely a</span></div>
<div class="line"><a id="l00033" name="l00033"></a><span class="linen