> which
                    needs to be tested as a string
                  </p>
                </td>
<td>
                  <p>
                    none
                  </p>
                </td>
</tr></tbody>
</table></div>
<div class="variablelist">
<p class="title"><b>Notation</b></p>
<dl class="variablelist">
<dt><span class="term"><code class="computeroutput"><span class="identifier">T</span></code></span></dt>
<dd><p>
                An arbitrary type.
              </p></dd>
<dt><span class="ter