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

typedef F<invariant T extends core::Object* = dynamic> = (T*, T*) →* T*;
static method test1() → dynamic
  ;
static method test2() → dynamic
  ;
static method test3a() → dynamic
  ;
static method test3b() → dynamic
  ;
static method test4() → dynamic
  ;
static method test5() → dynamic
  ;
static method test6() → dynamic
  ;
static method test7() → dynamic
  ;
static method test8() → dynamic
  ;
static method main() → dynamic
  ;