loadAuthorizationServerMetadata
fun loadAuthorizationServerMetadata(authorizationServer: String): HttpExchange<OAuth2AuthorizationServerMetadata>(source)
Loads OAuth2AuthorizationServerMetadata from authorizationServer.
Sends AuthorizationServerMetadata (from WellKnownPaths.OauthAuthorizationServer), and only if that fails, AuthorizationServerMetadata(openidConfiguration = true) (from WellKnownPaths.OpenidConfiguration).