public async Task <OrderResponse> OrderInquiryAsync(string orderId, string storeId = null, string region = null) { Signature signatureService = GetSignatureService(); string messageSignature = signatureService.Sign(); return(await orderApi.OrderInquiryAsync( CONTENT_TYPE, signatureService.ClientRequestId, GetApiKey(), signatureService.TimeStamp, orderId, messageSignature, region, storeId )); }