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

class Const extends core::Object /*hasConstConstructor*/  {
  const constructor •() → self::Const
    : super core::Object::•()
    ;
}
class Class extends core::Object /*hasConstConstructor*/  {
  const constructor •(core::Object? message) → self::Class
    : assert(false, message), super core::Object::•()
    ;
}
static method main() → dynamic
  ;
static method expect(dynamic expected, dynamic actual) → dynamic
  ;
static method test(() → void f) → core::Object?
  ;