/*
         * Fetches output path, using the GetPath method.
         * Also has handling for when a output file of that name already exists.
         */
        public static string GetOutputPath(string relativeOutputPath)
        {
            string outputFilePath = ArgParser.GetPath(relativeOutputPath);

            if (File.Exists(outputFilePath))
            {
                throw new ArgumentException("Output file " + outputFilePath + " already exists. System exit.");
            }
            return(outputFilePath);
        }
        /*
         * Fetches input path, using the GetPath method.
         * Also has handling for when a input file is not found.
         */
        public static string GetInputPath(string relativeInputPath)
        {
            string inputPath = ArgParser.GetPath(relativeInputPath);

            if (File.Exists(inputPath))
            {
                return(inputPath);
            }
            else
            {
                throw new ArgumentException("file " + inputPath + " does not exist. System exit");
            }
        }