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

class B<T extends core::Object = dynamic> extends core::Object {
  generic-covariant-impl field self::B::T x;
  synthetic constructor •() → self::B<self::B::T>
    ;
}
class C extends self::B<core::num> {
  synthetic constructor •() → self::C
    ;
}
static method main() → void
  ;