DB_File based ASN plugin lookup

[Benny Pedersen]

since i do use https://metacpan.org/pod/IP::Country::DB_File::Builder 
now i like to make ASN plugin use data from that DB_File as its done 
with RelayCountry plugin, so in end not using dns data anymore

the builder is pretty fast create the db file
# local.cf
ifplugin Mail::SpamAssassin::Plugin::RelayCountry

        country_db_type DB_File
        country_db_path /etc/mail/spamassassin/ipcc.db

endif # Mail::SpamAssassin::Plugin::RelayCountry

can i do same with ASN ?