Comment 7 for bug 1849687

Deployed now, and I've created the SnapBase row:

$ curl -s https://api.launchpad.net/devel/+snap-bases/core20 | jq -S
{
  "build_channels": {
    "core20": "edge",
    "snapcraft": "stable/launchpad-buildd"
  },
  "date_created": "2019-11-08T14:41:41.812648+00:00",
  "display_name": "core20",
  "distro_series_link": "https://api.launchpad.net/devel/ubuntu/focal",
  "http_etag": "\"7f401b6b43cb44869f0752d1d6a08d8b75800f4d-214b8fd2a1f9e0dda1da4c28400d22044d5fc54b\"",
  "is_default": false,
  "name": "core20",
  "registrant_link": "https://api.launchpad.net/devel/~cjwatson",
  "resource_type_link": "https://api.launchpad.net/devel/#snap_base",
  "self_link": "https://api.launchpad.net/devel/+snap-bases/core20",
  "web_link": "https://launchpad.net/+snap-bases/core20"
}