pushedAuthorizationRequestEndpoint

override URL for the Pushed Authorization Request (PAR) endpoint, or null to use discovery. Not counted toward the skip-discovery optimization above — PAR is opt-in via OAuth2ClientBuilder.enablePushedAuthorizationRequests, so leaving this null never blocks skipping discovery for the other 8 fields. Set this when all-8-fields skip-discovery is used together with PAR, since discovery (the normal source of this endpoint) is bypassed.