gcloud beta alloydb endpoints update

INFORMATION
gcloud beta alloydb endpoints update is not available in universe domain universe.
NAME
gcloud beta alloydb endpoints update - update an AlloyDB endpoint
SYNOPSIS
gcloud beta alloydb endpoints update ENDPOINT --region=REGION --target-instances=[TARGET_INSTANCES,…] [--async] [GCLOUD_WIDE_FLAG …]
DESCRIPTION
(BETA) Update an AlloyDB endpoint.
EXAMPLES
To update an endpoint, run: 
gcloud beta alloydb endpoints update my-endpoint --region=us-central1 --target-instances=projects/my-project/locations/us-central1/clusters/my-cluster/instances/my-instance-1,projects/my-project/locations/us-central1/clusters/my-cluster/instances/my-instance-2
POSITIONAL ARGUMENTS
ENDPOINT
AlloyDB endpoint ID
REQUIRED FLAGS
--region=REGION
Regional location (e.g. asia-east1, us-east1). See the full list of regions at https://cloud.google.com/sql/docs/instance-locations.
--target-instances=[TARGET_INSTANCES,…]
Comma-separated list of target instances that the endpoint will direct traffic to.For example, --target-instances=projects/my-project/locations/us-central1/clusters/my-cluster/instances/my-instance.For WRITE endpoint, only one target instance is allowed.
OPTIONAL FLAGS
--async
Return immediately, without waiting for the operation in progress to complete.
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 alloydb endpoints update