    Emit instances of the <code class="computeroutput"><span class="identifier">complex</span></code>
          data type as defined above using the generator defined by the customization
          point for <code class="computeroutput"><span class="identifier">complex</span></code>:
        </p>
<p>
</p>
<pre class="programlisting"><span class="identifier">test_generator_attr</span><span class="special">(</span><span class="string">"{1.2,2.4}"</span><span class="special">,</span> <span class="identifier">a