Customize Claims in OIDC Config Endpoint

Hey,

so, I've recently noticed, that on my OIDC Config Endpoint (at /f5-oauth2/v1/.well-known/openid-configuration) there are many claims in there, some of which I do not support. My custom claims also do not show. What would be the best way to customize this, or is there a way to do it automatically (since BigIp actually should be able to figure out which claims are there)

My initial idea would be to patch/redirect it via iRule, but maybe there is a better way?