final isLegacySubtyping1a = <Null>[] is List<int>;
const isLegacySubtyping1b = <Null>[] is List<int>;
final isLegacySubtyping2a = <int?>[] is List<int>;
const isLegacySubtyping2b = <int?>[] is List<int>;
const assertLegacySubtyping1 = <Null>[] as List<int>;
const assertLegacySubtyping2 = <int?>[] as List<int>;
void main() {}
expect(expected, actual) {}