Question about revoke the token in 'Sign in with Apple'

News link: https://developer.apple.com/news/?id=12m75xbj

If your app offers Sign in with Apple, you’ll need to use the Sign in with Apple REST API to revoke user tokens when deleting an account.

I'm not good English. I'm confused about the above sentence

Do I have to use REST API unconditionally or can I just delete to the account data?

Question about revoke the token in 'Sign in with Apple'
 
 
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