    CImg<T> get_permute_axes(const char *const axes_order) const {
      const T foo = (T)0;
      return _permute_axes(axes_order,foo);
    }
    CImg<T> get_permute_axes(const char *const axes_order) const {
      const T foo = (T)0;
      return _permute_axes(axes_order,foo);
    }