What is the proper way to receive all the items on the Trading post via the API? I have sent a request to " https://api.guildwars2.com/v2/commerce/listings/ " but it doesn't seem to give the response in the right format? ( i save it as a string but i cant convert it afterwards... . single ids work fine) Maybe i am doing something wrong or do i actually have to somehow find all the id's for all the items and then request every item individually? Or at least request 200 at a time since i read that that is the max the server responds to or something.