Use the $client$ token in findzone query - Bind-DLZ

[Job]

Hello,

regarding this post of some years ago:
http://bind9-users.isc.narkive.com/aduGYTeB/dlz-client-parameter-segfault

i would like is there is some hacks/workaround in order to use $client$ variable in other query, as example in the "findzone" query?

Actually the source client token is available only in allowxfr DLZ query.

I looked in dlz_postgres_driver.c but it is not so easy for me.

Thank you,
Francesco