ERPNext version 15 Offline data sync?

Hi is the offline data sync for ERPnext version 15.55.4 still available?

I want to be able to run ERPNext offline then it can sync all data or some data automatically when its online.

https://docs.frappe.io/erpnext/user/manual/en/event_streaming
I can’t seem to find this feature in the version 15.

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Thanks a bunch, I thought it was deprecated.