One of the values that indicates the region where you want to store the snapshot backups. The gateway region specified must be the same region as the region in your Host header in the request. For more information about available regions and endpoints for AWS Storage Gateway, see Regions and Endpoints in the Amazon Web Services Glossary. Valid Values: "us-east-1", "us-west-1", "us-west-2", "eu-west-1", "ap-northeast-1", "ap-southest-1", "sa-east-1"

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public string GatewayRegion { get; set; }