docs: protected void performFiltering(CharSequence text, int keyCode) {
          switch (mAutoCompleteMode){
              case AUTOCOMPLETE_MODE_SINGLE:
                  ((InternalAutoCompleteTextView)mInputView).superPerformFiltering(text, keyCode);
                  break;
              case AUTOCOMPLETE_MODE_MULTI:
                  ((InternalMultiAutoCompleteTextView)mInputView).superPerformFiltering(text, keyCode);
                  break;
          }
      }