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

import "dart:async";

static method throwSync() → asy::Future<void>
  ;
static method allYield() → asy::Future<void> async 
  ;
static method allYield2() → asy::Future<void> async 
  ;
static method allYield3() → asy::Future<void> async 
  ;
static method customErrorZone() → asy::Future<void> async 
  ;
static method main() → dynamic
  ;