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

class A extends core::Object {
  synthetic constructor •() → self::A
    ;
}
static method h1<X extends asy::Future<self::A>?>(self::h1::X% x) → asy::Future<void> async 
  ;
static method main() → void async 
  ;
static method expectEquals(dynamic a, dynamic b) → dynamic
  ;