Access HTTP header in custom source plugin

Hi Team,
My Grafana instance is configured with our own auth proxy and as a part of authentication auth proxy server sets couple of headers in request and one of the header is JWT token which has info on Data authorization for given user.
We are creating custom source plugin to pull data from source system and need to access the JWT token set by auth proxy to apply data authorization.

Can someone please guide how i can get an access to those custom headers set by auth proxy in my Custom source plugin code ?


Experts !!
Any suggestion on this one please