ObjFW  Diff

		@throw [OFInvalidArgumentException exception];
	}

	version = [root attributeForName: @"version"].stringValue;
	if (version == nil)
		@throw [OFInvalidArgumentException exception];

	if (version.decimalValue != 1)
	if (version.unsignedLongLongValue != 1)
		@throw [OFUnsupportedVersionException
		    exceptionWithVersion: version];

	elements = [root elementsForNamespace: OF_SERIALIZATION_NS];

	if (elements.count != 1)
		@throw [OFInvalidArgumentException exception];