class A {
  get b => throw 'foo';
}

class B extends A {
  get b => 42;
}

method1((A, A) r) {}

method2((A, A) r) {}

method3((A, A) r) {}

method4((A, A) r) {}

main() {}

expect(expected, actual) {}

throws(void Function() f) {}

allowThrow(void Function() f) {}