xAPILaunch.xAPIStatement.toString C# (CSharp) Method

        public string toString()
        {
            var str = JsonConvert.SerializeObject(this);
            str = str.Replace("\"_object\"", "\"object\"");
            return str;
        }
    }

        public void postStatement(xAPIStatement statement)
        {
            var body    = statement.toString();
            var content = new System.Net.Http.StringContent(body, Encoding.UTF8, "application/json");

            content.Headers.Add("cookie", this.cookie.ToString());
            content.Headers.Add("X-Experience-API-Version", "1.0");
            try
            {
                var    responseMessage = client.PostAsync(this.launchData.endpoint + "statements", content).Result;
                string responseText    = responseMessage.Content.ReadAsStringAsync().Result;
            }
            catch (Exception e)
            {
                var s = e.Message;
            }
        }