pocketmine\scheduler\ServerScheduler::handle PHP Method

    private function handle(TaskHandler $handler)
    {
        if ($handler->isDelayed()) {
            $nextRun = $this->currentTick + $handler->getDelay();
        } else {
            $nextRun = $this->currentTick;
        }
        $handler->setNextRun($nextRun);
        $this->tasks[$handler->getTaskId()] = $handler;
        $this->queue->insert($handler, $nextRun);
        return $handler;
    }