code: @Override
      public List<String> onQueryReceived(final @NonNull QueryToken queryToken) {
          List<String> buckets = Arrays.asList(BUCKET);
          List<Person> suggestions = people.getSuggestions(queryToken);
          SuggestionsResult result = new SuggestionsResult(queryToken, suggestions);
          // Have suggestions, now call the listener (which is this activity)
          onReceiveSuggestionsResult(result, BUCKET);
          return buckets;
      }
docs: --------------------------------------------------