public async Task <ResourceResponse <Document> > UpdateSessionAsync(string sessionJson, Guid sessionId) { if (string.IsNullOrEmpty(sessionJson)) { return(null); } var documentUri = DocumentDBHelper.CreateSessionDocumentUri(sessionId); var client = DocumentDBClient.CreateDocumentClient(); if (client == null) { return(null); } var sessionDocumentJObject = JObject.Parse(sessionJson); var response = await client.ReplaceDocumentAsync(documentUri, sessionDocumentJObject); return(response); }