question: public CreateNewNoteIntentBuilder addTags ( @ Nullable ArrayList < String > tags ) { ArrayList < String > list = mArgs . getStringArrayList ( EvernoteIntent . EXTRA_TAG_NAME_LIST ) ; if ( list == null ) { list = tags ; } else if ( tags != null ) { list . addAll ( tags ) ; } return setTags ( list ) ; }
target:  Adds more tags. Any existing tags aren't overwritten.