library /*isNonNullableByDefault*/;
import self as self;

import "dart:test";

static method main() → dynamic
  ;

library /*isNonNullableByDefault*/;
import self as self2;
import "dart:core" as core;

abstract class A extends core::Object {
  field core::int? _#A#x;
  field core::bool _#A#x#isSet;
  synthetic constructor •() → self2::A
    ;
  get x() → core::int;
  set x(core::int #t1) → void;
}
class _B extends core::Object implements self2::A {
  field core::int x;
  synthetic constructor •() → self2::_B
    ;
}