Iterator/ScheduleManagerScheduleIterator.php
protected function buffer()
    {
        $this->buffer = $this->scheduleManager->findSchedules($this->limit, $this->offset);

        $this->offset += count($this->buffer);
    }
protected function buffer()
    {
        $this->buffer = $this->scheduleManager->findSchedules($this->limit, $this->offset);

        $this->offset += count($this->buffer);
    }
Fill the inner buffer