code: @Override
      public void onReceiveSuggestionsResult(@NonNull SuggestionsResult result, @NonNull String bucket) {
          List<? extends Suggestible> suggestions = result.getSuggestions();
          adapter = new PersonMentionAdapter(result.getSuggestions());
          recyclerView.swapAdapter(adapter, true);
          boolean display = suggestions != null && suggestions.size() > 0;
          displaySuggestions(display);
      }
docs: --------------------------------------------------