/**
  * Load product data and create instances of ProductRow to assign to bundle
  *
  * @param BundleProxy $bundle
  *
  * @return array
  */
 public function getProductRows(BundleProxy $bundle)
 {
     $result = $this->_queryBuilderFactory->getQueryBuilder()->select($this->_columns)->from('p', self::PRODUCT_TABLE)->leftJoin('o', 'p.product_row_id = o.product_row_id', self::OPTION_TABLE)->where('p.bundle_id = ?i', [$bundle->getID()])->orderBy('p.product_row_id ASC')->getQuery()->run();
     $productRowData = [];
     $productRows = [];
     // Reorganise data into mutlidimensional array split into product rows to allow for multiple options per row
     foreach ($result as $row) {
         if (!array_key_exists($row->id, $productRowData)) {
             $productRowData[$row->id] = ['product_id' => $row->product_id, 'options' => $this->_getRowOptionsArray($row->option_name, $row->option_value), 'quantity' => $row->quantity];
         }
         $productRowData[$row->id]['options'] = $productRowData[$row->id]['options'] + $this->_getRowOptionsArray($row->option_name, $row->option_value);
     }
     foreach ($productRowData as $id => $data) {
         $productRow = new ProductRow($data['product_id'], $data['options'], $data['quantity']);
         $productRow->setID($id);
         $productRows[] = $productRow;
     }
     return $productRows;
 }