pocketmine\entity\Entity::createEntity PHP Method

    public static function createEntity($type, FullChunk $chunk, CompoundTag $nbt, ...$args)
    {
        if (isset(self::$knownEntities[$type])) {
            $class = self::$knownEntities[$type];
            return new $class($chunk, $nbt, ...$args);
        }
        return null;
    }

 public function burstArrow(Player $player)
 {
     if ($player->getInventory()->getItemInHand()->getId() === Item::BOW) {
         $bow = $player->getInventory()->getItemInHand();
         $nbt = new Compound("", ["Pos" => new Enum("Pos", [new Double("", $player->x), new Double("", $player->y + $player->getEyeHeight()), new Double("", $player->z)]), "Motion" => new Enum("Motion", [new Double("", -\sin($player->yaw / 180 * M_PI) * \cos($player->pitch / 180 * M_PI)), new Double("", -\sin($player->pitch / 180 * M_PI)), new Double("", \cos($player->yaw / 180 * M_PI) * \cos($player->pitch / 180 * M_PI))]), "Rotation" => new Enum("Rotation", [new Float("", $player->yaw), new Float("", $player->pitch)])]);
         $ev = new EntityShootBowEvent($player, $bow, Entity::createEntity("Arrow", $player->chunk, $nbt, $player), 1.5);
         $this->getServer()->getPluginManager()->callEvent($ev);
         if ($ev->isCancelled()) {
             $ev->getProjectile()->kill();
         } else {
             $ev->getProjectile()->setMotion($ev->getProjectile()->getMotion()->multiply($ev->getForce()));
             if ($ev->getProjectile() instanceof Projectile) {
                 $this->getServer()->getPluginManager()->callEvent($projectileEv = new ProjectileLaunchEvent($ev->getProjectile()));
                 if ($projectileEv->isCancelled()) {
                     $ev->getProjectile()->kill();
                 } else {
                     $this->object_hash[spl_object_hash($ev->getProjectile())] = 1;
                     $ev->getProjectile()->spawnToAll();
                 }
             } else {
                 $this->object_hash[spl_object_hash($ev->getProjectile())] = 1;
                 $ev->getProjectile()->spawnToAll();
             }
         }
     }
 }