OptionalclockOptionalfetchInject a custom fetch (tests, instrumentation). Defaults to global fetch.
IdentityServer base URL, e.g. https://identity.example. Discovery doc resolved as ${identityUrl}/.well-known/openid-configuration.
Optionalscopes
Treat a token as expired this many seconds before its true expiry. RFC 6749 §10.4 — buffer for clock drift + flight time.