public function createItemDraftRequest($x_ebay_c_marketplace_id, $content_language = null, $item_draft = null)
    {
        // Verify the required parameter 'x_ebay_c_marketplace_id' is set.
        if ($x_ebay_c_marketplace_id === null || (\is_array($x_ebay_c_marketplace_id) && count($x_ebay_c_marketplace_id) === 0)) {
            throw new \InvalidArgumentException('Missing the required parameter $x_ebay_c_marketplace_id when calling createItemDraft');