library;
import self as self;
import "dart:core" as core;

class A<X extends core::Object* = dynamic> extends core::Object {
  synthetic constructor •() → self::A<self::A::X*>*
    : super core::Object::•()
    ;
  method f<R extends core::Object* = dynamic>(<X extends core::Object* = dynamic>(self::A<X*>*) →* self::A::f::R* f) → self::A::f::R*
    return f.call<self::A::X*>(this);
  abstract member-signature get _identityHashCode() → core::int*;
  abstract member-signature method _instanceOf(dynamic instantiatorTypeArguments, dynamic functionTypeArguments, dynamic type) → core::bool*;
  abstract member-signature method _simpleInstanceOf(dynamic type) → core::bool*;
  abstract member-signature method _simpleInstanceOfTrue(dynamic type) → core::bool*;
  abstract member-signature method _simpleInstanceOfFalse(dynamic type) → core::bool*;
  abstract member-signature operator ==(dynamic other) → core::bool*;
  abstract member-signature get hashCode() → core::int*;
  abstract member-signature method toString() → core::String*;
  abstract member-signature method noSuchMethod(core::Invocation* invocation) → dynamic;
  abstract member-signature get runtimeType() → core::Type*;
}
static method main() → dynamic {
  self::A<core::num*>* a = new self::A::•<core::int*>();
  a.{self::A::f}<core::int*>(<X extends core::Object* = dynamic>(self::A<X*>* _) → core::int* => 42);
}