gzdoom/wadsrc/static/zscript/base.txt

class Object native
{
	/*virtual*/ native void Destroy();
}

class Thinker : Object native
{
}

class ThinkerIterator : Object native
{
	enum EStatnums
	{
		MAX_STATNUM = 127
	}

	native static ThinkerIterator Create(class<Actor> type = "Actor", int statnum=MAX_STATNUM+1);
	native Thinker Next();
	native void Reinit();
}

class DropItem : Object native
{
	/* native fields listed for reference only for now
	native readonly DropItem Next;
	native readonly name ItemName;	// internally called 'name' which clashes with the type.
	native readonly int Probability;
	native readonly int Amount;
	*/
}