e or a join operation on the completion stage.
 In situations such as these, the executor does not control
 the type of thread that is used to run the task.</p>

 <p>When running on Java SE 17, the <code>true</code> value
 behaves the same as the <code>false</code> value and results in
 platform threads being created rather than virtual threads.
 </p></div>
<dl class="notes">
<dt>Returns:</dt>
<dd><code>true</code> if the executor can create virtual threads,
         otherwise <code>false</code>.</dd>
<dt>S