/// <summary>
        /// Finds number of matches in a response object
        /// </summary>
        /// <param name="args"></param>
        /// <returns>ProximityCalculatorResponse with numberofmatches and errormessage if any</returns>
        public ProximityCalculatorResponse FindNumberofMatches(string[] args)
        {
            var response = new ProximityCalculatorResponse();

            try
            {
                var proximitySearchRequest = _argumentParser.ParseArguments(args);
                var numberofMatches        = _proximitySearchCalculator.FindNumberofMatches(new ProximityCalculatorRequest
                {
                    KeyWords  = proximitySearchRequest.KeyWords,
                    Range     = proximitySearchRequest.Range,
                    TextWords = _fileParser.GetAllWords(proximitySearchRequest.FileName).ToList()
                });

                response.NumberofMatches = numberofMatches;
            }
            catch (ArgumentException argsEx)
            {
                response.ErrorMessage = argsEx.Message;
            }
            catch (Exception ex)
            {
                response.ErrorMessage = ex.Message;
            }
            return(response);
        }