Why does cron_system_entry() lack an allow entrypoint?

[George]

Hi all, first message for the new year. Best wishes for everyone in 2019.

As per title, the interface doesn't have an allow: entrypoint when it's intended
to be used to transition cron to the target domain. Instead I need to manually allow it in
my local policy.

Specifically looking at system cron jobs: system_cronjob_t.

I'm just wondering why it's not included when there's already the needed exec
and type transition allow.

If someone more knowledgeable can shed some light that would be appreciated.

Cheers.