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

class A extends core::Object {
  final field core::int foo;
  constructor •(core::int foo) → self::A
    ;
}
class B extends self::A {
  constructor •(dynamic foo) → self::B
    ;
}
static method main() → dynamic
  ;