public void setDeviceId(String deviceId) {
        this.deviceId = deviceId;
    }
<p>
The unique ID generated for this device by Cognito.
</p>

@param deviceId
       The unique ID generated for this device by Cognito.
aws-java-sdk-cognitosync/src/main/java/com/amazonaws/services/cognitosync/model/UnsubscribeFromDatasetRequest.java