code: 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);
      }
docs: Adds more tags. Any existing tags aren't overwritten.
  
  @param tags The tags which should be added to the existing ones.
  @return This Builder object to allow for chaining of calls to set methods.