Proper way to reload config files in backend SIGHUP handler

All,

I am writing a PostgreSQL extension and need to reload certain
extension-managed files whenever the postmaster is reloaded/receives SIGHUP,
but cannot find anything that looks like a standard way to do that. Is there a
hook or recommended method or something else I am missing?

Thanks,

-- 
Mike Palmiotto
Software Engineer
Crunchy Data Solutions
https://crunchydata.com