Google Search Console Stops Testing Domain Property?

Did Google end their beta test of Domain Property, the feature that aims at simplifying property sets in the Google Search Console. The help document Google had back when it was being tested now leads to a page not found message.

Here is what the page looked like back then:

Here is what the help document said before it was removed:

Search Console is experimenting with a new type of web property that includes all protocol and subdomain variations for a given domain. This new property, called a Domain property, is defined using a bare domain or subdomain fragment, without any protocol or path. Data for all subdomains, protocols, and subpaths are aggregated for this property.

For example, if you define a Domain property as "example.com", it includes example.com, any subdomains of example.com (for example, m.example.com, support.m.example.com, www.example.com, and so on), as well as any subpaths in any of those domains, on both http and https.

Now it is gone. So Google might be done testing it and it failed or it is launching soon or adapting into something else?

Anyone in the beta want to let us know?

Forum discussion at Twitter.