code: public void addSuggestions(final @NonNull SuggestionsResult result,
                                 final @NonNull String bucket,
                                 final @NonNull TokenSource source) {
          // Add result to proper bucket and remove from waiting
          QueryToken query = result.getQueryToken();
          synchronized (mLock) {
              mResultMap.put(bucket, result);
              Set<String> waitingForBuckets = mWaitingForResults.get(query);
              if (waitingForBuckets != null) {
                  waitingForBuckets.remove(bucket);
                  if (waitingForBuckets.size() == 0) {
                      mWaitingForResults.remove(query);
                  }
              }
          }
  
          // Rebuild the list of suggestions in the appropriate order
          String currentTokenString = source.getCurrentTokenString();
          synchronized (mLock) {
              mSuggestions.clear();
              List<Suggestible> suggestions = mSuggestionsListBuilder.buildSuggestions(mResultMap, currentTokenString);
  
              // If we have suggestions, add them to the adapter and display them
              if (suggestions.size() > 0) {
                  mSuggestions.addAll(suggestions);
                  mSuggestionsVisibilityManager.displaySuggestions(true);
              } else {
                  hideSuggestionsIfNecessary(result.getQueryToken(), source);
              }
          }
  
          notifyDataSetChanged();
      }
docs: Add mention suggestions to a given bucket in the adapter. The adapter tracks the latest result for every given
  bucket, and passes this information to the SuggestionsManager to construct the list of suggestions in the
  appropriate order.
  <p>
  Note: This should be called exactly once for every bucket returned from the query client.
  
  @param result a {@link SuggestionsResult} containing the suggestions to add
  @param bucket a string representing the group to place the {@link SuggestionsResult} into
  @param source the associated {@link TokenSource} to use for reference