public Void visitErrorType(ErrorType type, Void ignore) {
   printType("originalType", type.getOriginalType(), Details.FULL);
   return visitClassType(type, null);
 }
 @Override
 public Void visitErrorType(ErrorType t, Void ignored) {
   Type ot = t.getOriginalType();
   if (ot != null) visit(ot);
   return null;
 }