CalDavSynchronizer.Implementation.TimeZones.GlobalTimeZoneCache.LoadFromUriOrNull C# (CSharp) Метод

        private async Task<IICalendarCollection> LoadFromUriOrNull(HttpClient httpClient, Uri uri)
        {

            using (var response = await httpClient.GetAsync(uri))
            {
                try
                {
                    response.EnsureSuccessStatusCode();
                }
                catch (Exception)
                {
                    s_logger.ErrorFormat("Can't access timezone data from '{0}'", uri);
                    return null;
                }

                try
                {
                    var result = await response.Content.ReadAsStringAsync();
                    using (var reader = new StringReader(result))
                    {
                        var collection = iCalendar.LoadFromStream(reader);
                        return collection;
                    }
                }
                catch (Exception)
                {
                    s_logger.ErrorFormat("Can't parse timezone data from '{0}'", uri);
                    return null;
                }
            }
        }
    }