"Sign in with Apple" Button custom

We have questions regarding "Sign in with Apple" function announced at WWDC.We had sent you an enquiry on how to implement this function while we were trying to insert a "Sign in with Apple" button on native apps, we only received a guide link to the usage on mobile web.So could you let us know;


1. If we can get guide docs for native apps, not mobile web

2. If we can insert a button image ("Signin with Apple") instead of coding it into the build when displaying login options on native apps

"Sign in with Apple" Button custom
 
 
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