@interface CDPAuthenticationHelper : NSObject + (id)_contextForPrimaryAccount; + (id)_authContextForContext:(id)a0; + (void)_authWithContext:(id)a0 completion:(id /* block */)a1; + (id)_contextForPrimaryAccountSilentAuth; + (id)authController; + (void)silentAuthenticationForContext:(id)a0 withCompletion:(id /* block */)a1; + (void)silentAuthenticationForPrimaryAccountWithClientAppName:(id)a0 clientAppBundleId:(id)a1 withCompletion:(id /* block */)a2; + (void)silentAuthenticationForPrimaryAccountWithCompletion:(id /* block */)a0; @end