how to display AppAuth Web Page with full screen for iOS?

I am using AppAuth for authenticating with private third party service , and using

OIDAuthState.authState function to load request. Is it possible to load that auth webpage with full screen?

Sample Code:

        let externalUserAgent = OIDExternalUserAgentASWebAuthenticationSession.init(with: self)

         OIDAuthState.authState(byPresenting: request, externalUserAgent: externalUserAgent) {
            authState, error in

          //
        }