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

class Foo<S extends core::num> extends core::Object {
  synthetic constructor •() → self::Foo<self::Foo::S>
    ;
  method test1(covariant-by-class self::Foo::S x) → void
    ;
}
extension Test<T extends core::Object? = dynamic> on T% {
  get test = self::Test|get#test;
}
static method Test|get#test<T extends core::Object? = dynamic>(lowered final self::Test|get#test::T% #this) → (self::Test|get#test::T%) → self::Test|get#test::T%
  ;
static method main() → void
  ;