public String getGatewayId() {
        return this.gatewayId;
    }
<p>
The ID of the gateway to be updated.
</p>

@return The ID of the gateway to be updated.
aws-java-sdk-iotsitewise/src/main/java/com/amazonaws/services/iotsitewise/model/UpdateGatewayCapabilityConfigurationRequest.java