MongoDB.Bson.IO.JsonScanner.FormatMessage C# (CSharp) Метод

        private static string FormatMessage(string message, JsonBuffer buffer, int start)
        {
            var length = 20;
            string snippet;
            if (buffer.Position + length >= buffer.Length)
            {
                snippet = buffer.Substring(start);
            }
            else
            {
                snippet = buffer.Substring(start, length) + "...";
            }
            return string.Format("{0} '{1}'.", message, snippet);
        }