container system --help doesn't show subcommand property

I'm just getting started w/ container. I've been using lima. I thought that container should be investigated. I installed the .4.1 package, and started the tutorial. Imagine my surprise when the local dns entry could be created, but not set as a property. The command

container system --help

doesn't show property as a valid subcommand?

OVERVIEW: Manage system components

USAGE: container system <subcommand>

OPTIONS:
  --version               Show the version.
  -h, --help              Show help information.

SUBCOMMANDS:
  dns                     Manage local DNS domains
  logs                    Fetch system logs for `container` services
  start                   Start `container` services
  stop                    Stop all `container` services
  status                  Show the status of `container` services
  kernel                  Manage the default kernel configuration

  See 'container help system <subcommand>' for detailed help.
>  ~  container system property
Error: Unexpected argument 'property'
Usage: container system <subcommand>
  See 'container system --help' for more information.

Some logs

container system status
apiserver is not running and not registered with launchd
>  ~  container system start
Verifying apiserver is running...
Installing base container filesystem...
>  ~  container system status
Verifying apiserver is running...
apiserver is running
>  ~  container system property
Error: Unexpected argument 'property'
Usage: container system <subcommand>
  See 'container system --help' for more information.

I'm obviously missing something. Advice appreciated