pocketmine\level\Level::unloadChunkRequest PHP Метод

    public function unloadChunkRequest(int $x, int $z, bool $safe = true) : bool
    {
        if ($safe === true and $this->isChunkInUse($x, $z) or $this->isSpawnChunk($x, $z)) {
            return false;
        }
        $this->queueUnloadChunk($x, $z);
        return true;
    }