private string ConvertToString(GsakFileLine line)
        {
            if (line.IsEmpty())
            {
                return(String.Empty);
            }
            if (line.IsIncomplete())
            {
                return(String.Empty);
            }

            return($"\"{line.Code}\",\"{line.WaypointName}\",\"{line.Latitude}\",\"{line.Longitude}\"");
        }
 public Task <string> Convert(GsakFileLine line)
 => Task.FromResult(ConvertToString(line))
 ;