SNMP exporter in Grafana agent with community string

I’m using Grafana Agent 0.40.3 to gather SNMP data from various devices.
Everything works fine for devices without a community string (or let’s say the default public string)

This would be my config:

     enabled: true
       - name: ncr1
         module: if_mib
       - name: k1521
         module: if_mib

The device works without issues;

The device would need a community string. But I can not find where to put it
This page says there was a breaking change; but somehow the example got rid of the community string as well.

And the normal documentation about the SNMP exporter integration does not show a community string. Also I can not find an example anywhere that shows the auths section in the snmp_config block.

Would greatly appreciate any hint!