code>
                      where <code class="computeroutput"><span class="identifier">G</span></code> is
                      the return type of <code class="computeroutput"><span class="identifier">fg</span></code>
                    </p>
                  </td>
<td>
                    <p>
                      Invoke <code class="computeroutput"><span class="identifier">fg</span></code> at
                      generation time, returning a generator <code class="computeroutput"><span class="identifie