onSuggestionsFetchRequested = (req: Autosuggest.SuggestionsFetchRequest) => {
    // req.reason seems to no longer exist in 9.1.x
    this.getSuggestionsDebounced(req.value);
  }
The object given to onSuggestionsFetchRequested contains only 1 key: value.  reason seems to be missing. :-/