PM-by-classes.n

using System.Console;

[Record] class A { public Foo : B   { get; } }
[Record] class B { public Bar : int { get; } }

module Program
{
  Main() : void
  {
    def obj1 : object = A(B(42));
    match (obj1)
    {
      | A(Foo=B(Bar=bar)) => WriteLine($"Bar=$bar");
      | _ => WriteLine("Ops!");
    }
  }
}