public static function isQuotationAlreadyUploadedForAnotherQuotation($quotationId, $quotationBlob)
 {
     try {
         if ($quotationId !== null && $quotationBlob != null) {
             if (!Quotation::isQuotationAlreadyUploadedForAnotherQuotation($quotationBlob, $quotationId)) {
                 echo AppUtil::getReturnStatus("Successful", "Quotation not Already Uploaded");
             } else {
                 echo AppUtil::getReturnStatus("Unsuccessful", "Quotation Already Uploaded");
             }
         } else {
             echo AppUtil::getReturnStatus("Unsuccessful", "Invalid Parameters");
         }
     } catch (Exception $e) {
         echo AppUtil::getReturnStatus("Unsuccessful", $e->getMessage());
     }
 }