NotifyEventTypetype NotifyEventType = | "added" | "removed" | "updated" | "observerAdded" | "observerRemoved" | "observerResultsUpdated" | "observerOptionsUpdated";§Type§"added" | "removed" | "updated" | "observerAdded" | "observerRemoved" | "observerResultsUpdated" | "observerOptionsUpdated"[src]