Converting ctl.conf to UCL

I'm trying to use configure ctld to create virtual disks suitable for
use with virtio-scsi (I'm working with a VM that is hardcoded to
require scsi disks, so the other virtio disk providers unfortunately
can't be used in my case).  I would like to use ctl.conf in UCL format
so I can use UCL's file inclusion facilities, which will simplify
managing my configuration.  Unfortunately, I'm having trouble
converting a file to UCL format and I'm beginning to suspect that the
manpage is missing something.  Here is my test configuration, which
does work for me:

lun foo_test_storage0 {
        serial "f1-1-1";
        path "/usr/local/vmrc/vm/foo-test/storageHDD0.img";
}

lun foo_test_storage1 {
        serial "f1-1-2";
        path "/usr/local/vmrc/vm/foo-test/storageHDD1.img";
}

target "iqn.com.example:foo-test" {
        port "ioctl/11/1"
        lun 0 foo_test_storage0
        lun 1 foo_test_storage1
}

My attempt at a UCL version resulted in this:

lun {
        foo_test_storage0 {
                serial = "f1-1-1"
                path = "/usr/local/vmrc/vm/foo-test/storageHDD0.img"
        }

        foo_test_storage1 {
                serial = "f1-1-2"
                path = "/usr/local/vmrc/vm/foo-test/storageHDD1.img"
        }
}

target {
        "iqn.com.example:foo-test" {
                port = "ioctl/11/1"
                lun = [
                        { number = 0, name = foo_test_storage0 },
                        { number = 1, name = foo_test_storage1 } ,
                ]
        }
}

But I just get the error:

Starting ctld.
ctld: no LUNs defined for target "iqn.com.example:foo-test"

This seems to match the sample in the manpage, so I'm confused as to
what has gone wrong.  Does anybody have any pointers?