abstract class Key {
  int get a => runtimeType.hashCode or null.hashCode;
  int get b => runtimeType.hashCode | null.hashCode;
  int get c { return runtimeType.hashCode or null.hashCode; }
  int get d { return runtimeType.hashCode | null.hashCode; }

  int get e => 1 + runtimeType.hashCode or null.hashCode + 3;
  int get f => 1 + runtimeType.hashCode | null.hashCode + 3;
  int get g { return 1 + runtimeType.hashCode or null.hashCode + 3; }
  int get h { return 1 + runtimeType.hashCode | null.hashCode + 3; }

  int i(int x, int y) => x or y;
  int j(int x, int y) => x | y;
  int k(int x, int y) { return x or y; }
  int l(int x, int y) { return x | y; }
  int m(int x, int y) { int z =  x or y; return z; }
  int n(int x, int y) { int z = x | y; return z; }

  int o(int x, int y) => 1 + x or y + 3;
  int p(int x, int y) => 1 + x | y + 3;
  int q(int x, int y) { return 1 + x or y + 3; }
  int r(int x, int y) { return 1 + x | y + 3; }

  s(int x, int y) {
    s(x or y, x or y);
    s(x | y, x | y);
  }

  Key(int x, int y) : foo = x or y, bar = x or y {
    print("hello ${x or y}");
  }

  Key(int x, int y) : foo = x | y, bar = x | y {
    print("hello ${x | y}");
  }

  not_currently_working(int x, int y) {
    x or y;
    x | y;
  }
}