library test;
import self as self;
import "dart:core" as core;
import "dart:async" as asy;

import "dart:async";

class D<T extends core::Object* = dynamic> extends core::Object {
  synthetic constructor •() → self::D<self::D::T*>*
    : super core::Object::•()
    ;
  abstract member-signature get _identityHashCode() → core::int*; -> core::Object::_identityHashCode
  abstract member-signature method _instanceOf(dynamic instantiatorTypeArguments, dynamic functionTypeArguments, dynamic type) → core::bool*; -> core::Object::_instanceOf
  abstract member-signature method _simpleInstanceOf(dynamic type) → core::bool*; -> core::Object::_simpleInstanceOf
  abstract member-signature method _simpleInstanceOfTrue(dynamic type) → core::bool*; -> core::Object::_simpleInstanceOfTrue
  abstract member-signature method _simpleInstanceOfFalse(dynamic type) → core::bool*; -> core::Object::_simpleInstanceOfFalse
  abstract member-signature operator ==(dynamic other) → core::bool*; -> core::Object::==
  abstract member-signature get hashCode() → core::int*; -> core::Object::hashCode
  abstract member-signature method toString() → core::String*; -> core::Object::toString
  abstract member-signature method noSuchMethod(core::Invocation* invocation) → dynamic; -> core::Object::noSuchMethod
  abstract member-signature get runtimeType() → core::Type*; -> core::Object::runtimeType
}
class E<T extends core::Object* = dynamic> extends self::D<self::E::T*> {
  synthetic constructor •() → self::E<self::E::T*>*
    : super self::D::•()
    ;
}
class B<T extends core::Object* = dynamic> extends core::Object {
  synthetic constructor •() → self::B<self::B::T*>*
    : super core::Object::•()
    ;
  method g(generic-covariant-impl self::E<self::B::T*>* x) → self::D<self::B::T*>*
    return null;
  abstract member-signature get _identityHashCode() → core::int*; -> core::Object::_identityHashCode
  abstract member-signature method _instanceOf(dynamic instantiatorTypeArguments, dynamic functionTypeArguments, dynamic type) → core::bool*; -> core::Object::_instanceOf
  abstract member-signature method _simpleInstanceOf(dynamic type) → core::bool*; -> core::Object::_simpleInstanceOf
  abstract member-signature method _simpleInstanceOfTrue(dynamic type) → core::bool*; -> core::Object::_simpleInstanceOfTrue
  abstract member-signature method _simpleInstanceOfFalse(dynamic type) → core::bool*; -> core::Object::_simpleInstanceOfFalse
  abstract member-signature operator ==(dynamic other) → core::bool*; -> core::Object::==
  abstract member-signature get hashCode() → core::int*; -> core::Object::hashCode
  abstract member-signature method toString() → core::String*; -> core::Object::toString
  abstract member-signature method noSuchMethod(core::Invocation* invocation) → dynamic; -> core::Object::noSuchMethod
  abstract member-signature get runtimeType() → core::Type*; -> core::Object::runtimeType
}
class C<U extends core::Object* = dynamic> extends self::B<asy::Future<self::C::U*>*> {
  synthetic constructor •() → self::C<self::C::U*>*
    : super self::B::•()
    ;
  method g(generic-covariant-impl core::Object* x) → self::E<asy::Future<self::C::U*>*>*
    return null;
  method h() → void {
    self::D<asy::Future<self::C::U*>*>* x = super.{self::B::g}(self::f<self::E<asy::Future<self::C::U*>*>*>());
  }
}
static method f<T extends core::Object* = dynamic>() → self::f::T*
  return null;
static method main() → dynamic {}