/**
  * Hook into 'woocommerce_composite_component_cart_item_identifier' to add stamp data for bundles.
  *
  * @param  array  $composited_item_identifier
  * @param  string $composited_item_id
  * @return array
  */
 public static function composite_bundle_cart_item_stamp($composited_item_identifier, $composited_item_id)
 {
     if (isset($composited_item_identifier['type']) && $composited_item_identifier['type'] === 'bundle') {
         WC_PB_Compatibility::$bundle_prefix = $composited_item_id;
         $bundle_cart_data = WC_PB()->cart->woo_bundles_add_cart_item_data(array(), $composited_item_identifier['product_id']);
         $composited_item_identifier['stamp'] = $bundle_cart_data['stamp'];
         WC_PB_Compatibility::$bundle_prefix = '';
     }
     return $composited_item_identifier;
 }