private String getMessageFormatNodeValue(final Document doc) {
		Node messageNode = this.getFirstLevelNodeByTag(doc, MESSAGE_TAG);
		if (messageNode == null) {
			return DEFAULT_MESSAGE_FORMAT;
		}
		Node formatNode = this.getNodeByTagInNode(messageNode, MESSAGE_FORMAT_TAG);
		if (formatNode == null) {
			return DEFAULT_MESSAGE_FORMAT;
		}
		String value = this.getNodeValue(formatNode);
		if (value.isEmpty()) {
			value = DEFAULT_MESSAGE_FORMAT;
		}
		return value;
	}