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

typedef C<contravariant A extends core::Object* = dynamic, contravariant K extends core::Object* = dynamic> = <B extends core::Object* = dynamic>(A*, K*, B*) →* core::int*;
typedef D<contravariant K extends core::Object* = dynamic> = <A extends core::Object* = dynamic>(core::int*) →* <B extends core::Object* = dynamic>(A*, K*, B*) →* core::int*;
static method producer<K extends core::Object* = dynamic>() → dynamic
  ;
static method main() → dynamic
  ;