gcloud firestore databases connection-string

INFORMATION
gcloud firestore databases connection-string is not available in universe domain universe.
NAME
gcloud firestore databases connection-string - prints the mongo connection string for the given Firestore database
SYNOPSIS
gcloud firestore databases connection-string --database=DATABASE [--auth=AUTH; default="none"     | --validate=VALIDATE] [GCLOUD_WIDE_FLAG]
EXAMPLES
To get the connection string for a Firestore database with a databaseId testdb without auth configuration.
gcloud firestore databases connection-string --database=testdb --auth=none

To get the connection string for a Firestore database with a databaseId testdb with Google Compute Engine VM auth.

gcloud firestore databases connection-string --database=testdb --auth=gce-vm
REQUIRED FLAGS
--database=DATABASE
The database to operate on.

For example, to operate on database foo:

gcloud firestore databases connection-string --database='foo'
OPTIONAL FLAGS
At most one of these can be specified:
--auth=AUTH; default="none"
The auth configuration for the connection string.

If connecting from a Google Compute Engine VM, use gce-vm. For short term access using the gcloud CLI's access token, use access-token. For password auth use scram-sha-256. Otherwise, use none and configure auth manually.

AUTH must be one of: none, gce-vm, access-token, scram-sha-256.

--validate=VALIDATE
Validate the specified connection string for the current database. This command checks that the connection string is well formed, contains the required parameters, and specifies correct configuration values for the current database.
GCLOUD WIDE FLAGS
These flags are available to all commands: --access-token-file, --account, --billing-project, --configuration, --flags-file, --flatten, --format, --help, --impersonate-service-account, --log-http, --project, --quiet, --trace-token, --user-output-enabled, --verbosity.

Run $ gcloud help for details.

NOTES
These variants are also available:
gcloud alpha firestore databases connection-string
gcloud beta firestore databases connection-string