object DoTheRightThing(SomeEnumeration discriminator) {
  // So I might be an asshole but I just like this more than switch statements
  return
    SomeEnumeration.A == discriminator ? A() :
    SomeEnumeration.B == discriminator ? B() :
    SomeEnumeration.C == discriminator ? C() :
    SomeEnumeration.D == discriminator ? D() :
    Default();
}