| Subject: | Class::MOP::Class::clone_object |
$obj->{foo} = 'bar';
$clone1 = $obj->meta->clone_object( $obj, foo => 'xyzzy');
# $clone1->{foo} is 'xyzzy', as expected
$clone2 = $obj->meta->clone_object( $obj, foo => undef );
# $clone2->{foo} is still 'bar'!