/**
  * @param StoreFrontBundle\Struct\Product\Unit $unit
  * @return array
  */
 public function convertUnitStruct(StoreFrontBundle\Struct\Product\Unit $unit)
 {
     $data = array('minpurchase' => $unit->getMinPurchase(), 'maxpurchase' => $unit->getMaxPurchase(), 'purchasesteps' => $unit->getPurchaseStep(), 'purchaseunit' => $unit->getPurchaseUnit(), 'referenceunit' => $unit->getReferenceUnit(), 'packunit' => $unit->getPackUnit(), 'unitID' => $unit->getId(), 'sUnit' => array('unit' => $unit->getUnit(), 'description' => $unit->getName()));
     $data['unit_attributes'] = $unit->getAttributes();
     return $data;
 }