private void parseGroup(XMLStreamReader xmlReader, String name) {
		if (this.groupId != null) {
			this.logger.logWarning(LOGGING_SOURCE, "invalid resource description file, 'group' element must not be nested");
			return;
		}

		String groupName = xmlReader.getAttributeValue(null, NAME_ATTR);
		if (groupName == null) {
			this.logger.logWarning(LOGGING_SOURCE, "group name attribute must be specified");
			return;
		}
		
		this.groupId = new CogaenId(groupName);
		if (this.resSrv.hasGroup(this.groupId)) {
			this.logger.logWarning(LOGGING_SOURCE, "ambiguous group name: " + name);
		} else {
			this.resSrv.createGroup(groupId);
		}
	}