Facebook API allowing deauthorization of application

I know this question has been asked in the past, but times have changed and I am hoping the facebook SDK has progressed. I have seen other websites with the ability to deauthorize their app from the website rather than having the user sign in to facebook to do 开发者_如何学Cit. An example is glassdoor.com. If you create an account and then sync your FB account you can then deauthorize on the Account page. Any ideas on how this works because I have searched facebook docs and find only the deauthorization callback.

In graph API you can issue an HTTP DELETE request to /UID/permissions to revoke authorization for an app. Or you can use auth.revokeAuthorization from legacy REST API.

https://developers.facebook.com/docs/reference/rest/auth.revokeAuthorization/

hope this helps