Okta React Native: OktaIdToken Appears Unfound in Android Studio

I’m following this link attempting to work through adding okta login functionality to a program in development. However, as seen below, Android studio cannot seem to locate OktaIdToken when it is used in the lines shown. This is code included in the okta-react-native install.

If anyone could provide assistance, that would be appreciated. Apologies if this is a simple issue, I am new to the platform and have not been able to find any reference elsewhere.