New Post: Re-using Validators for Complex Properties cannot specify WithMessage

When I set a validator on a complex property the message I set in the parent validator is ignored:

RuleFor(issuer => issuer.Location)
  .SetValidator(new LocationValidator())
  .WithMessage("Wrong Location for issuer: {0}", issuer => issuer.IssuerId);

I want to specify the message in the parent validator because I need to specify the IssuerId.