s</a></span>
  <span class="keyword">virtual</span> <span class="identifier">std</span><span class="special">::</span><span class="identifier">string</span> <a class="link" href="output_test_stream.html#idp41349376-bb"><span class="identifier">get_stream_string_representation</span></a><span class="special">(</span><span class="special">)</span> <span class="keyword">const</span><span class="special">;</span>

  <span class="comment">// <a class="link" href="output_test_stream.html#idp41351744-bb">private m