support the following:
        </p>
<div class="variablelist">
<p class="title"><b>bool parse(f, l, context, skip, attr)</b></p>
<dl>
<dt><span class="term"><code class="computeroutput"><span class="identifier">f</span></code>, <code class="computeroutput"><span class="identifier">l</span></code></span></dt>
<dd><p>
                first/last iterator pair
              </p></dd>
<dt><span class="term"><code class="computeroutput"><span class="identifier">context</span></code></span></dt>
<dd><p>
          