Rx\Scheduler\VirtualTimeScheduler::scheduleAbsolute PHP Method

    public function scheduleAbsolute($dueTime, $action)
    {
        $invokeAction = function ($scheduler, $action) {
            $action();
            return new EmptyDisposable();
        };
        return $this->scheduleAbsoluteWithState($action, $dueTime, $invokeAction);
    }