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

class B extends core::Object {
  synthetic constructor •() → self::B
    ;
}
class X<T extends self::B = dynamic> extends core::Object {
  synthetic constructor •() → self::X<self::X::T>
    ;
}
class Y extends self::X<dynamic> {
  synthetic constructor •() → self::Y
    ;
}
static method main() → void
  ;