Pool::submit PHP Method

    public function submit(Threaded $task)
    {
    }

 public function testPoolGc()
 {
     $pool = new Pool(1, PoolTestWorker::class, [new stdClass(), new Threaded()]);
     $work = new PoolTestWork();
     $pool->submit($work);
     while (@$i++ < 2) {
         $pool->submit(new PoolTestWork());
         # nothing to assert, no exceptions please
     }
     $pool->submitTo(0, new PoolTestWork());
     # nothing to assert, no exceptions please
     /* synchronize with pool */
     $sync = new PoolTestSync();
     $pool->submit($sync);
     $sync->synchronized(function ($sync) {
         if (!$sync->finished) {
             $sync->wait();
         }
     }, $sync);
     $pool->collect(function ($task) {
         $this->assertTrue($task->isGarbage());
         return true;
     });
     $pool->shutdown();
 }