pmbootstrap kconfig_check fails with `AttributeError: module 'pmb.helpers.frontend' has no attribute 'kconfig_check'`

The kconfig_check command doesn't seem to work anymore:

$ ./pmbootstrap.py --help
<snip>
    kconfig_check       check, whether all the necessary options are
                        enabled/disabled in the kernel config

$ ./pmbootstrap.py kconfig_check linux-google-crosshatch
[15:59:39] ERROR: module 'pmb.helpers.frontend' has no attribute 'kconfig_check'
[15:59:39] See also: <https://postmarketos.org/troubleshooting>
Run 'pmbootstrap log' for details

(003543) [15:59:39] ERROR: module 'pmb.helpers.frontend' has no attribute 'kconfig_check'
(003543) [15:59:39] See also: <https://postmarketos.org/troubleshooting>
(003543) [15:59:39] Traceback (most recent call last):
  File "/home/zhuowei/pmbootstrap/pmb/__init__.py", line 63, in main
    getattr(frontend, args.action)(args)
AttributeError: module 'pmb.helpers.frontend' has no attribute 'kconfig_check'

I think this command has been replaced by kconfig check - should the old command redirect to it?