module foo {
  namespace foo;
  prefix foo;

  container foo {
    container foo;

    choice baz {
      description desc;
      case baz {
        description desc;
        choice bar {
          description desc;
          case bar {
            status deprecated;
            container bar;
          }
        }
      }
    }

    choice bar {
      reference ref;
      case bar {
        reference ref;
        choice baz {
          reference ref;
          case baz {
            reference ref;
            container xyzzy;
          }
        }
      }
    }
  }
}