class A {
  late final int foo = 42;
  const A();
}

class B {
  late final int foo = 42;
  late final String bar = "foobar";
  const B();
}

class C {
  late final int foo = 42;
  const C();
  const C.another();
}

class D {
  late final int foo = 42;
  late final String bar = "foobar";
  const D();
  const D.another();
}

main() {}