public function deleteVendorsObject()
 {
     //include_once './Services/Payment/classes/class.ilPaymentBookings.php';
     if (!count($_POST['vendor'])) {
         ilUtil::sendFailure($this->lng->txt('pays_no_vendor_selected'));
         $this->vendorsObject();
         return true;
     }
     // CHECK BOOKINGS
     foreach ($_POST['vendor'] as $vendor) {
         if (ilPaymentBookings::_getCountBookingsByVendor($vendor)) {
             ilUtil::sendInfo($this->lng->txt('pays_active_bookings'));
             $this->vendorsObject();
             return true;
         }
     }
     $_SESSION['pays_vendor'] = $_POST['vendor'];
     ilUtil::sendQuestion($this->lng->txt('pays_sure_delete_selected_vendors'));
     $this->vendorsObject(true);
     return true;
 }