eator.html" title="interface in jakarta.enterprise.inject.build.compatible.spi">creation</a> function class, must not be <code>null</code></dd>
<dt>Returns:</dt>
<dd>this <code>SyntheticBeanBuilder</code></dd>
<dt>Throws:</dt>
<dd><code><a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/lang/IllegalStateException.html" title="class or interface in java.lang" class="external-link">IllegalStateException</a></code> - if this method is called multiple times</dd>
</dl>
</section>
</li>
<l