Legacy Item ID Problem

I was writing a plugin but I couldn't solve this problem. My problem is that the ids of the items are the same. The id for each wood is the same. I couldn't find how to separate them. Can you help me?

PHP:

$item = Item::get(Item::LOG);
                    if(!$o->getInventory()->contains($item)){
                    $o->sendPopup("§cEnvanterinde bu öğeden bulunmamaktadır.");
                    return false;
                    }
                    $this->OakWood($o);
                    return true;

$item = Item::get(Item::LOG);
                    if(!$o->getInventory()->contains($item)){
                    $o->sendPopup("§cEnvanterinde bu öğeden bulunmamaktadır.");
                    return false;
                    }
                    $this->BirchWood($o);
                    return true;

Oak wood working but others wood dont working. Help me.

 

From what I've looked, most items don't have a legacy item id. Can we change the legacy id to normal id for this?
Like;

PHP:

$item = Item::get(Item::LOG);

$item = Item::getID("17");

 

$item = Item::get(id, damage, count);