IFS Cloud 22R2 - Calling a third Party REST API with OAuth2

Hi All,

Assume we need to call a third party REST API with OAuth2.
How do we do this using Plsql_Rest_Sender_API.Call_Rest_EndPoint_Json or using similar methods in package Plsql_Rest_Sender_API.
There are parameters http_req_headers_,query_parameters_ and also auth_params_ in these methods so I guess it can be a combination of above parameters OR just using auth_params_.
Does anyone have an example on how to do this?
i.e. How do we specify values related to oAuth2 authorization?

UPDATE:
I found that this can be achieved by using Routing Address.  There should be a way to handle this in the code as well but still not sure how to do it.