protected override async Task <object> OnPerform()
        {
            var response = await _restClient.OverrideLimitDetails(
                _cacheManager.SaleNumber,
                _cacheManager.TillNumberForSale, _cacheManager.TreatyNumber, _cacheManager.TreatyName);

            var data = await response.Content.ReadAsStringAsync();

            switch (response.StatusCode)
            {
            case HttpStatusCode.OK:
                var overrideLimitDetails = new DeSerializer().MapOverrideLimitDetails(data);
                return(new Mapper().MapOverrideLimitDetails(overrideLimitDetails));

            default:
                return(await HandleExceptions(response));
            }
        }