Dart List all sealed subtypes

I'm looking for a way to list all sealed subtypes in Dart, like the equivalent of Enum.values but for sealed subtypes.

For example, an enum behaves this way:

enum Foo { bar, baz }
main() {
  for (final value in Foo.values) {
    switch (value) {
      case Foo.bar:
        print('bar');
      case Foo.baz:
        print('baz');
    }
  }
}
// Prints:
// bar
// baz

But if I have a sealed class with multiple subtypes:

sealed class Foo {}
class Bar extends Foo {}
class Baz extends Foo {}

In the above case, I don't see a way to iterate over Bar and Baz. I suppose I would be looking for something like:

main() {
  switch (Foo.subtypes) {
    case Bar():
      print('bar');
    case Baz():
      print('baz');
  }
}

Foo.subtypes is not valid, but I was hoping there was a way (other than using mirrors or giving each subtype an enum).

There is no such feature, it really is reflection and should only be done through dart:mirrors.

One of the reasons is that there is no single type which represents every instantiation of a generic subtype of a sealed class. And there is no easy way to iterate over types to begin with (Type objects are not types).