/**
  * Validates the given Landingpage object that reflects the settings in the given value object.
  *
  * @param voObj The value object containing the values to be validated.
  * @throws ValidationException Thrown if the attributes at the value object do not meet all
  *     constraints.
  */
 public static void validate(VOPublicLandingpage voObj) throws ValidationException {
   BLValidator.isNotNull("marketplaceId", voObj.getMarketplaceId());
   BLValidator.isNonNegativeNumber("numberServices", voObj.getNumberServices());
   BLValidator.isNotNull("fillinCriterion", voObj.getFillinCriterion());
   BLValidator.isNotNull("landingpageServices", voObj.getLandingpageServices());
 }