and a seller contact phone it's a simple addition uh but this is where the design thought process starts to think so uh the seller data can also be separated into additional uh additional resources and it can be reused on other endpoints so we could do it as additional resource so we would have again our listing with existing attributes and we would have a relationship to a call seller to a special type of resource and let's look at some examples so first example would be we can have a research type seller and then we can