docs: @TargetApi(Build.VERSION_CODES.JELLY_BEAN)
      public CharSequence getCompletionHint() {
          if(mAutoCompleteMode == AUTOCOMPLETE_MODE_NONE || Build.VERSION.SDK_INT < Build.VERSION_CODES.JELLY_BEAN)
              return null;
          return ((AutoCompleteTextView)mInputView).getCompletionHint();
      }