it is in the scope and it is already supported:

public void testTaskInstanceUnrelatedToAProcess() {
TaskInstance taskInstance = new TaskInstance("do laundry", "someoneelse");
session.save(taskInstance);
long id = taskInstance.getId();

newTransaction();

taskInstance = (TaskInstance) session.load(TaskInstance.class, new Long(id));
assertNotNull(taskInstance);
assertEquals("do laundry", taskInstance.getName());
assertEquals("someoneelse", taskInstance.getActorId());
}

is that what you need ?

regards, tom.