code: protected FraggleFragment peek() {
          if (fm.getBackStackEntryCount() > 0) {
              return ((FraggleFragment) fm.findFragmentByTag(
                      fm.getBackStackEntryAt(fm.getBackStackEntryCount() - 1).getName()));
          } else {
              return new EmptyFragment();
          }
      }
docs: Peeks the last fragment in the Fragment stack.
  
  @return Last Fragment in the fragment stack
  @throws java.lang.NullPointerException if there is no Fragment Added