pocketmine\block\SnowLayer::place PHP Метод

    public function place(Item $item, Block $block, Block $target, $face, $fx, $fy, $fz, Player $player = null)
    {
        $down = $this->getSide(0);
        if ($down->isSolid()) {
            $this->getLevel()->setBlock($block, $this, true);
            return true;
        }
        return false;
    }