AppAuth OIDAuthState

Describe the bug
I am trying to use OIDAuthState to create an GTMAppAuthFetcherAuthorization object.

The method call I use:

OIDAuthState.authState(byPresenting: request, externalUserAgent: externalUserAent,OIDCallBack:callback)

The problem is that user agent is an instance of a class I declare as such:

class ExternalUserAgent: NSObject, OIDExternalUserAgent {
    func present(_ request: OIDExternalUserAgentRequest, session: OIDExternalUserAgentSession) -> Bool {
        return true
    }
    
    func dismiss(animated: Bool, completion: @escaping () -> Void) {
        print(animated)
    }
}

With this implementation nothing happens when the OIDAuthState.authState is called.

What could be the issue with thee library as the documentation doesn't cater to this authState method which accepts an OIDUserAgent?

Start with the OIDAuthState.authState(byPresenting:externalUserAgent:...) call and the ExternalUserAgent implementation shown in the issue. Check the AppAuth-iOS documentation and OIDExternalUserAgent flow to determine why nothing happens; done means the reported auth-state flow produces the expected user-agent behavior.