Factory instance.
 The Jakarta EE Product Provider establishes the context once per
 <code>ForkJoinWorkerThread</code> and does not reset the context
 between operations that run on the <a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/util/concurrent/ForkJoinWorkerThread.html" title="class or interface in java.util.concurrent" class="external-link"><code>ForkJoinWorkerThread</code></a>.<p>

 The task runs without an explicit transaction (they do not enlist in the application
 compo