library /*isNonNullableByDefault*/;
import self as self;
import "dart:core" as core;

@self::valueClass
class Animal extends core::Object {
  final field core::int numLegs;
  synthetic constructor •() → self::Animal
    ;
}
@self::valueClass
class Cat extends core::Object implements self::Animal {
  final field core::int numLegs;
  final field core::int numWhiskers;
  synthetic constructor •() → self::Cat
    ;
}
static const field core::String valueClass = "valueClass";
static method main() → dynamic
  ;
static method expect(dynamic expected, dynamic actual, [dynamic expectNull]) → dynamic
  ;