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

class C<X extends core::Object? = dynamic> extends core::Object {
  synthetic constructor •() → self::C<self::C::X%>
    : super core::Object::•()
    ;
  method m1({core::List<(self::C::X%) → void> xs = #C1}) → void {}
  method m2({covariant-by-class core::List<<Y extends core::List<self::C::X%> = dynamic>(Y) → void> xs = #C2}) → void {}
}
static method main() → void
  return new self::C::•<dynamic>().{self::C::m1}(){({xs: core::List<(dynamic) → void>}) → void};

constants  {
  #C1 = <(core::Object?) →* void>[]
  #C2 = <Never*>[]
}