question: Task < Void > synchronizeAllAuthDataAsync ( ) { Map < String , Map < String , String > > authData ; synchronized ( mutex ) { if ( ! isCurrentUser ( ) ) { return Task . forResult ( null ) ; } authData = getAuthData ( ) ; } List < Task < Void > > tasks = new ArrayList < > ( authData . size ( ) ) ; for ( String authType : authData . keySet ( ) ) { tasks . add ( synchronizeAuthDataAsync ( authType ) ) ; } return Task . whenAll ( tasks ) ; }
target:  Ensures that all auth sources have auth data (e.g. access tokens, etc.) that matches this user.