/**
  * 
  * @return \Application\Model\Collection\InspectionCollection
  */
 public function getInspectionCollection()
 {
     if (!$this->inspectionCollection instanceof InspectionCollection) {
         $this->inspectionCollection = InspectionQuery::create()->whereAdd(Inspection::ID_PROFORMA_INVOICE, $this->purchaseOrderEntryCollection->getDisctinctProformaInvoiceIds())->find();
     }
     return $this->inspectionCollection;
 }