Sendbird Reaction Categories; what is the "url" parameter for?

When creating a category there is a “url” parameter. What do I need to use this for?

I cannot find information anywhere, it’s just “this is the url for the emoji category”.
Is it supposed to link somewhere in my app?
Can it be blank?

Thanks

Hi, @SamKK

This is for category image. You can categorize emojis. When categorizing emojis, maybe you gonna want to set the representative image for each category. You can refer to Slack emojis (below image).

If you don’t want to use it, it can be blank.

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