Updates a gateway's name. Specify which gateway to update using the Amazon Resource Name (ARN) of the gateway in your request.
See https://paws-r.github.io/docs/backupgateway/update_gateway_information.html for full documentation.
backupgateway_update_gateway_information(GatewayArn, GatewayDisplayName = NULL)
[required] The Amazon Resource Name (ARN) of the gateway to update.
The updated display name of the gateway.