ty means
 that it is not enabled, which is equivalent to not registering it at all.
 <p>
 If not called, this synthetic bean will not be an alternative.</div>
<dl class="notes">
<dt>Parameters:</dt>
<dd><code>isAlternative</code> - whether this synthetic bean should be an alternative</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 inter