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

import "org-dartlang-testcase:///issue42181_lib.dart";

static method f1(core::int x) → core::int?
  ;
static method test() → void
  ;
static method main() → dynamic
  ;

library;
import self as self2;
import "dart:core" as core;

typedef F = (core::int*) →* core::int*;