private static function __getCloudFrontInvalidationBatchXML($paths, $callerReference = '0')
	{
		$dom = new DOMDocument('1.0', 'UTF-8');
		$dom->formatOutput = true;
		$invalidationBatch = $dom->createElement('InvalidationBatch');
		foreach ($paths as $path)
			$invalidationBatch->appendChild($dom->createElement('Path', $path));

		$invalidationBatch->appendChild($dom->createElement('CallerReference', $callerReference));
		$dom->appendChild($invalidationBatch);
		return $dom->saveXML();
	}