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

class A<X extends core::Object? = dynamic> extends core::Object {
  synthetic constructor •() → self::A<self::A::X%>
    ;
}
class B extends self::A<core::Null?> {
  synthetic constructor •() → self::B
    ;
}
class C extends core::Object {
  synthetic constructor •() → self::C
    ;
  method foo(core::Null? n, self::A<core::Null?> an) → core::Null?
    ;
}
static method foo() → dynamic
  ;
static method bar() → dynamic
  ;
static method main() → dynamic
  ;