LDAP federation mapper: memberOf

Dear colleagues,

The task consist of assigning a certain LDAP group (always the same) to all the users that are written by Keylocak into the LDAP.

Given a working federated LDAP,

al our users can login (idp or not) and then they are mapped to the LDAP.

I could not find a way to assign memberOf (user) or member (group) attributes using the builtin mapper types, like group-ldap-mappet, etc, one of them is suitable for the task?

Is this feasible?

We imported the groups in keycloak but may be irrelevant…?