fnMemorizePackage = function (oControl, sPackage) {
			if (!sPackage) {
				var sType = (oControl) ? oControl.constructor : "?";
				throw Error("Controls with empty package are currently not supported by the XML serializer: " + sType);
			}
			if (aPackages.indexOf(sPackage) === -1) {
				aPackages.push(sPackage);
			}
		}
Serializes the given XML view.

@returns {string} the serialized XML view.