For tests using SCIMRequest.java as client, we are passing in JWT authentication headers via custom.headers="'Authorization:Bearer $JWT' as outlined here, and everything works.

Now we are trying to enable test testCreateUserWithMissingExtensionSchemaInSchemasAttribute400 which uses CustomTargetSystemRestClient as client, and it seems it does not take the custom.headers but requires oauth.clientId; oauth.secret; oauth.service.url and oauth.grant=client_credentials.

Is there way to provide custom.headers for CustomTargetSystemRestClient as well?