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

class Foo extends core::Object {
  synthetic constructor •() → self::Foo
    : super core::Object::•()
    ;
}
extension Bar on self::Foo {
}
static method main() → void {
  self::Bar bar = new self::Foo::•();
}