gcloud beta app migrate-to-run

INFORMATION
gcloud beta app migrate-to-run is not available in universe domain universe.
NAME
gcloud beta app migrate-to-run - migrate a second-generation App Engine app to Cloud Run
SYNOPSIS
gcloud beta app migrate-to-run [--appyaml=APPYAML] [--entrypoint=ENTRYPOINT] [--service=SERVICE] [--version=VERSION] [GCLOUD_WIDE_FLAG …]
DESCRIPTION
(BETA) Migrates the second-generation App Engine app to Cloud Run.
EXAMPLES
To migrate an App Engine app to Cloud Run:

through app.yaml

gcloud app migrate-to-run --appyaml=path/to/app.yaml --entrypoint=main

OR

through service and version

gcloud app migrate-to-run --service=default --version=v1 --entrypoint=main

FLAGS
--appyaml=APPYAML
YAML file for the second generation App Engine version to be migrated.
--entrypoint=ENTRYPOINT
entrypoint required for some runtimes
--service=SERVICE
service name that is deployed in App Engine
--version=VERSION
version name that is deployed in App Engine
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
This command is currently in beta and might change without notice. This variant is also available: 
gcloud alpha app migrate-to-run