use_ok 'PublicInbox::Filter::Mirror';
my $f = PublicInbox::Filter::Mirror->new;
ok($f, 'created PublicInbox::Filter::Mirror object');
{
use_ok 'PublicInbox::Filter::Mirror';
my $f = PublicInbox::Filter::Mirror->new;
ok($f, 'created PublicInbox::Filter::Mirror object');
{