NAME
    Mail::SpamAssassin::GeoDB - unified interface for geoip modules

    Plugins need to signal SA main package the modules they want loaded,
    supported modules are "GeoIP2", "Geo::IP", "IP::Country::DB_File" and
    "IP::Country::Fast".

    package Mail::SpamAssassin::Plugin::MyPlugin; sub new { ...
    $self->{main}->{geodb_wanted}->{country} = 1;
    $self->{main}->{geodb_wanted}->{isp} = 1; )

    (internal stuff still subject to change)