main = <No Member>;
library from "org-dartlang-test:///lib.dart" as lib {

  import "org-dartlang-test:///main.dart";

  class Y extends dart.core::Object implements main::X {
    synthetic constructor •() → lib::Y*
      : super dart.core::Object::•()
      ;
    get foo() → dart.core::int*
      return 42;
    abstract member-signature get _identityHashCode() → dart.core::int*; -> dart.core::Object::_identityHashCode
    abstract member-signature method _instanceOf(dynamic instantiatorTypeArguments, dynamic functionTypeArguments, dynamic type) → dart.core::bool*; -> dart.core::Object::_instanceOf
    abstract member-signature method _simpleInstanceOf(dynamic type) → dart.core::bool*; -> dart.core::Object::_simpleInstanceOf
    abstract member-signature method _simpleInstanceOfTrue(dynamic type) → dart.core::bool*; -> dart.core::Object::_simpleInstanceOfTrue
    abstract member-signature method _simpleInstanceOfFalse(dynamic type) → dart.core::bool*; -> dart.core::Object::_simpleInstanceOfFalse
    abstract member-signature operator ==(dynamic other) → dart.core::bool*; -> dart.core::Object::==
    abstract member-signature get hashCode() → dart.core::int*; -> dart.core::Object::hashCode
    abstract member-signature method toString() → dart.core::String*; -> dart.core::Object::toString
    abstract member-signature method noSuchMethod(dart.core::Invocation* invocation) → dynamic; -> dart.core::Object::noSuchMethod
    abstract member-signature get runtimeType() → dart.core::Type*; -> dart.core::Object::runtimeType
  }
}
library from "org-dartlang-test:///main.dart" as main {

  import "org-dartlang-test:///lib.dart";

  class X extends dart.core::Object {
    synthetic constructor •() → main::X*
      : super dart.core::Object::•()
      ;
    abstract member-signature get /* from org-dartlang-sdk:///sdk/lib/_internal/vm/lib/object_patch.dart */ _identityHashCode() → dart.core::int*; -> dart.core::Object::_identityHashCode
    abstract member-signature method /* from org-dartlang-sdk:///sdk/lib/_internal/vm/lib/object_patch.dart */ _instanceOf(dynamic instantiatorTypeArguments, dynamic functionTypeArguments, dynamic type) → dart.core::bool*; -> dart.core::Object::_instanceOf
    abstract member-signature method /* from org-dartlang-sdk:///sdk/lib/_internal/vm/lib/object_patch.dart */ _simpleInstanceOf(dynamic type) → dart.core::bool*; -> dart.core::Object::_simpleInstanceOf
    abstract member-signature method /* from org-dartlang-sdk:///sdk/lib/_internal/vm/lib/object_patch.dart */ _simpleInstanceOfTrue(dynamic type) → dart.core::bool*; -> dart.core::Object::_simpleInstanceOfTrue
    abstract member-signature method /* from org-dartlang-sdk:///sdk/lib/_internal/vm/lib/object_patch.dart */ _simpleInstanceOfFalse(dynamic type) → dart.core::bool*; -> dart.core::Object::_simpleInstanceOfFalse
    abstract member-signature operator /* from org-dartlang-sdk:///sdk/lib/_internal/vm/lib/object_patch.dart */ ==(dynamic other) → dart.core::bool*; -> dart.core::Object::==
    abstract member-signature get /* from org-dartlang-sdk:///sdk/lib/_internal/vm/lib/object_patch.dart */ hashCode() → dart.core::int*; -> dart.core::Object::hashCode
    abstract member-signature method /* from org-dartlang-sdk:///sdk/lib/_internal/vm/lib/object_patch.dart */ toString() → dart.core::String*; -> dart.core::Object::toString
    abstract member-signature method /* from org-dartlang-sdk:///sdk/lib/_internal/vm/lib/object_patch.dart */ noSuchMethod(dart.core::Invocation* invocation) → dynamic; -> dart.core::Object::noSuchMethod
    abstract member-signature get /* from org-dartlang-sdk:///sdk/lib/_internal/vm/lib/object_patch.dart */ runtimeType() → dart.core::Type*; -> dart.core::Object::runtimeType
  }
  static method foo(main::X* x) → dart.core::int* {
    return x is lib::Y* ?{dart.core::int*} x{lib::Y*}.{lib::Y::foo} : null;
  }
}