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

class C extends core::Object {
  late covariant final [setter] field core::int x;
  synthetic constructor •() → self::C
    ;
}
class D extends self::C {
  synthetic constructor •() → self::D
    ;
  set x(covariant core::num value) → void
    ;
}
static method main() → dynamic
  ;