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

import "dart:async";

class X extends core::Object {
  final field dynamic x;
  final field dynamic y;
  constructor •(dynamic x, dynamic y) → self::X*
    : self::X::x = x, self::X::y = y, super core::Object::•()
    ;
  method toString() → core::String*
    return "X(${this.{self::X::x}}, ${this.{self::X::y}})";
  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 noSuchMethod(core::Invocation* invocation) → dynamic; -> core::Object::noSuchMethod
  abstract member-signature get runtimeType() → core::Type*; -> core::Object::runtimeType
}
class Y extends core::Object {
  synthetic constructor •() → self::Y*
    : super core::Object::•()
    ;
  method f(dynamic _) → dynamic {}
  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
}
static method f1() → asy::Future<core::List<core::Object*>*>* async {
  return <core::Object*>[1];
}
static method f2() → core::List<core::Object*>*
  return <core::Object*>[2];
static method f3() → asy::Future<core::Object*>* async {
  return 3;
}
static method foo() → asy::Future<self::X*>* async {
  return new self::X::•(let final self::Y* #t1 = new self::Y::•() in block {
    #t1.{self::Y::f}(await self::f1());
    #t1.{self::Y::f}(self::f2());
  } =>#t1, await self::f3());
}
static method main() → asy::Future<void>* async {
  core::print(await self::foo());
}