code: @Override
      public void reportValidationProblem(XMLValidationProblem prob)
          throws XMLStreamException
      {
      	if (mVldProbHandler != null) {
              // Fix for [WSTX-209]
              mVldProbHandler.reportProblem(prob);
      	} else {
              super.reportValidationProblem(prob);
      	}
      }
docs: If there is an error handler established, call it.