public async Task <SharedOffer> UpdateAsync(SharedOffer sharedOffer)
        {
            try
            {
                var content = await HttpHelper.Request(Constants.FACEOFFERS_AUTH_TOKEN, Constants.FACEOFFERS_API_URL, "api/SharedOffers", sharedOffer, HttpRequestType.PUT);

                return(await content.ReadAsAsync <SharedOffer>());
            }
            catch (Exception e)
            {
                throw;
            }
        }
 public async Task DeleteAsync(SharedOffer sharedOffer)
 {
     throw new NotImplementedException();
 }