/**
  * Filter the query by a related Product object
  *
  * @param   Product|PropelObjectCollection $product The related object(s) to use as filter
  * @param     string $comparison Operator to use for the column comparison, defaults to Criteria::EQUAL
  *
  * @return                 OrganizationProductQuery The current query, for fluid interface
  * @throws PropelException - if the provided filter is invalid.
  */
 public function filterByProduct($product, $comparison = null)
 {
     if ($product instanceof Product) {
         return $this->addUsingAlias(OrganizationProductPeer::PRODUCT_ID, $product->getId(), $comparison);
     } elseif ($product instanceof PropelObjectCollection) {
         if (null === $comparison) {
             $comparison = Criteria::IN;
         }
         return $this->addUsingAlias(OrganizationProductPeer::PRODUCT_ID, $product->toKeyValue('PrimaryKey', 'Id'), $comparison);
     } else {
         throw new PropelException('filterByProduct() only accepts arguments of type Product or PropelCollection');
     }
 }