/**
  * {@inheritdoc}
  */
 public static function fromArray(array $values)
 {
     $message = new self();
     $values = array_merge(['sku' => null, 'category' => null, 'sort_order' => null, 'item_ids' => [], 'counts' => []], $values);
     $message->setSku($values['sku']);
     $message->setCategory($values['category']);
     $message->setSortOrder($values['sort_order']);
     foreach ($values['item_ids'] as $item) {
         $message->addItemIds($item);
     }
     foreach ($values['counts'] as $item) {
         $message->addCounts($item);
     }
     return $message;
 }