docs: public static int getPositionByIdentifier(DrawerBuilder drawer, long identifier) {
          if (identifier != -1) {
              for (int i = 0; i < drawer.getAdapter().getItemCount(); i++) {
                  if (drawer.getAdapter().getItem(i).getIdentifier() == identifier) {
                      return i;
                  }
              }
          }
  
          return -1;
      }