void child() {
 static_cast< id<Mountable >> ( object);
}

assert(x<0 && y>=3);
assert(y <0&&z> 2);
assert(a>>1);

std::unique_ptr<Interface< T >> GetProjectionAdapter(const std::string& model_name);

auto c = a< b>>c;
auto c = a << b >>c;

if (Something<a> == c) {
}

if (id< Something<a >> == c) {
}

const std::vector< Eigen::Matrix<T, A, B >> & P_c;

const unsigned int wl = w>> lvl;

using Poly = Model<P, Poly<Dx,Dy, Dz>>;

void Compute(
    Image<E::Matrix< SType, Dim,Int >> const& src,
    Image< E::Matrix<  TType,Dim, std::string> >& dst);

Opt<std::vector < std::unordered_set<FrameId> >> partition;