public String getGatewayId() {
        return this.gatewayId;
    }
<p>
The unique identifier assigned to your gateway during activation. This ID becomes part of the gateway Amazon
Resource Name (ARN), which you use as input for other operations.
</p>

@return The unique identifier assigned to your gateway during activation. This ID becomes part of the gateway
        Amazon Resource Name (ARN), which you use as input for other operations.
aws-java-sdk-storagegateway/src/main/java/com/amazonaws/services/storagegateway/model/DescribeGatewayInformationResult.java