function test() {

class B {
  qux() { return "bar"; }
}
class C extends B {
  qux() { return super.qux() + this.corge; }
}
var obj = {
  qux: C.prototype.qux,
  corge: "ley"
};
return obj.qux() === "barley";
      
}

if (!test())
    throw new Error("Test failed");