em>SyncReadStream</em></span> requirements.
                  </p>
                </td>
</tr>
<tr>
<td>
                  <p>
                    <code class="computeroutput"><span class="identifier">buffer</span></code>
                  </p>
                </td>
<td>
                  <p>
                    Storage for additional bytes read by the implementation from
                    the stream. This is both an input and an output parameter; on
                    entry, the parser will be presented