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

class A<T extends core::Object* = dynamic> extends core::Object {
  synthetic constructor •() → self::A<self::A::T*>*
    ;
  method f<U extends core::Object* = dynamic>(generic-covariant-impl core::Map<self::A::T*, self::A::f::U*>* m) → void
    ;
}
class B extends self::A<core::String*> {
  synthetic constructor •() → self::B*
    ;
  method f<V extends core::Object* = dynamic>(generic-covariant-impl core::Map<core::String*, self::B::f::V*>* m) → void
    ;
}
static method main() → dynamic
  ;