public IActionResult Put(String container, String restype)
        {
            if (_engine.ContainsContainer(container))
            {
                HttpContext.Response.Headers.Add("x-ms-version", "2017-04-17");

                var result = new ContentResult
                {
                    StatusCode  = (int)HttpStatusCode.Conflict,
                    ContentType = "application/xml",
                    Content     =
                        @"<?xml version=""1.0"" encoding=""utf-8"" ?><Error><Code>ContainerAlreadyExists</Code><Message>The specified container already exists.
            RequestId:" + Guid.NewGuid().ToString("D") + @"
            Time:" + DateTime.UtcNow.ToString("o") + "</Message></Error>"
                };

                return(result);
            }
            else
            {
                throw new NotImplementedException();
            }
        }