def get_one(self, pack_ref, requester_user):
        """
        Retrieve config schema for a particular pack.

        Handles requests:
            GET /config_schema/<pack_ref>
        """
        packs_controller._get_one_by_ref_or_id(
            ref_or_id=pack_ref, requester_user=requester_user
        )

        return self._get_one_by_pack_ref(pack_ref=pack_ref)

        Retrieve config schema for a particular pack.

        Handles requests:
            GET /config_schema/<pack_ref>
        
st2api/st2api/controllers/v1/pack_config_schemas.py