How to pass client identity to the upstream with OIDC plugin

Hi All,

How can we pass the client identity (eg: client id) to the upstream applications (request processors) with OIDC plugin. After the client validation in plugin, access token is added to the header from which upstream apps cannot extract any meaningful information about the downstream API initiator (client).

So is there any configuration to pass client id as a header with the upstream request once the OIDC plugin complete validation.

Thanks!