if (childCollections == null) readCollection();
readCollection();
	protected boolean hasChildCollection(String name) throws XMLDBException {		if (childCollections == null)			readCollection();		try {			return childCollections.containsKey(XmldbURI.xmldbUriFor(name));		} catch(URISyntaxException e) {			throw new XMLDBException(ErrorCodes.INVALID_URI,e);		}	}