Mqtt custom keepalive topic name

Hey there,

Does anybody know how to set custom keepalive topic in configuration.yaml in mqtt section? Victron solar system has special mqtt keepalive topic name: R/<solar system id>/keepalive and I would like to make mqtt integration do it OOTB without any autmation hac etc…

Thank you

P.S.: This is my very first post, hopefully everything I did correctly…