library /*isNonNullableByDefault*/;
import self as self;
import "dart:async" as asy;
import "dart:core" as core;

static method foo1() → asy::Future<void> async 
  ;
static method foo2() → asy::Future<core::int> async 
  ;
static method foo3() → asy::Future<void> async 
  ;
static method foo4() → asy::Future<core::int> async 
  ;
static method foo5() → asy::Future<core::int> async 
  ;
static method main() → void
  ;