How would I retrive the url on an emoji on discord using discordrb such as: https://cdn.discordapp.com/emojis/1117212093725294593.png?

I’m passing the emoji from user input like this: <:cat_wave:1268827566731690067>.

I’m trying to use the .icon_url method like this:

emoji = <:cat_wave:1268827566731690067>

link = emoji.icon_url

I reccive a noMethod error or undefined constant eroror