value => {});
__PACKAGE__->set_primary_key('left_id', 'right_id');
-__PACKAGE__->belongs_to(left => 'PrefetchBug::Left', 'left_id');
-__PACKAGE__->belongs_to(
+__PACKAGE__->refers_to(left => 'PrefetchBug::Left', 'left_id');
+__PACKAGE__->refers_to(
right => 'PrefetchBug::Right',
'right_id',
# {join_type => 'left'}