code: public String getMessage(Constraint constraint) {
  		String objectName = null;
  		if (constraint instanceof PropertyConstraint) {
  			objectName = ((PropertyConstraint) constraint).getPropertyName();
  		}
  		String message = buildMessage(objectName, null, constraint);
  		return message;
  	}
docs: /*
  (non-Javadoc)
  
  @see org.springframework.rules.reporting.MessageTranslator#getMessage(org.springframework.rules.constraint.Constraint)