code: public void loadChoices(String propertyName) {
          if (propertyName == null || propertyName.isEmpty()) {
              loadChoices(DEFAULT_CHOICES);
          } else {
              loadChoices(PropertyUtil.getValues(propertyName, null));
          }
      }
docs: Load choices from the named property
  
  @param propertyName Name of the property containing the choices. Must be in the acceptable
  format. If the property name is null, loads a default set of choices.