private string GenerateUniqueFieldName()
        {
            int    num = FieldDefinitions.Count;
            string text;

            while (true)
            {
                text = num.ToString(CultureInfo.InvariantCulture);
                if (FieldDefinitions.GetByName(text) == null)
                {
                    break;
                }
                num++;
            }
            return(text);
        }