@Override
 public ValidationResult validateCode(String theSystem, String theCode, String theDisplay) {
   CodeValidationResult result =
       myValidationSupport.validateCode(myCtx, theSystem, theCode, theDisplay);
   if (result == null) {
     return null;
   }
   return new ValidationResult(
       result.getSeverity(), result.getMessage(), result.asConceptDefinition());
 }