general {
    funcon-term: 
      initialise-giving finalise-failing 
      sequential (
      print set(),
      print {1},
      print {1,2,3},
      print cast({1,2}, sets(integers))
      )
        ;
}

tests {
    result-term: null-value;
    standard-out: [
    set(), 
    {1}, 
    {1, 2, 3}, 
    {1, 2}
    ];
}