code: public boolean performItemClick(View view, int position, long id) {
          if (mOnItemClickListener != null) {
              playSoundEffect(SoundEffectConstants.CLICK);
              if (view != null) {
                  view.sendAccessibilityEvent(AccessibilityEvent.TYPE_VIEW_CLICKED);
              }
              mOnItemClickListener.onItemClick(/*this*/null, view, position, id);
              return true;
          }
  
          return false;
      }
docs: Call the OnItemClickListener, if it is defined.
  
  @param view The view within the AdapterView that was clicked.
  @param position The position of the view in the adapter.
  @param id The row id of the item that was clicked.
  @return True if there was an assigned OnItemClickListener that was
  called, false otherwise is returned.