/**
  * @param bool $autodate
  * @param bool $null_values
  * @return bool
  * @throws PrestaShopException
  */
 public function add($autodate = true, $null_values = false)
 {
     if ($this->position <= 0) {
         $this->position = NowBlockFooterCmsColumn::getHigherPosition() + 1;
     }
     if (!parent::add($autodate, $null_values) || !Validate::isLoadedObject($this)) {
         return false;
     }
     return true;
 }