JaxbHelper jaxbHelper = PlatformLayerClientBase.toJaxbHelper(item);
String xml = PlatformLayerClientBase.serialize(jaxbHelper, item);
PlatformLayerKey key = PlatformLayerClientBase.toKey(jaxbHelper, item, listServices(true));
UntypedItem ret = putItemByTag(key, uniqueTag, xml, Format.XML);
Class<T> itemClass = (Class<T>) item.getClass();
return promoteToTyped(ret, itemClass);
}