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

typedef Func = () → void;
class C<T extends core::Object? = dynamic> extends core::Object {
  synthetic constructor •() → self::C<self::C::T%>
    ;
  method test() → dynamic
    ;
}
static method use(dynamic x) → dynamic
  ;
static method main() → dynamic
  ;