public IndexModel(
     ILogger <IndexModel> logger,
     IWebHostEnvironment webHostEnvironment,
     ICypherService cypher,
     IFileService fileService)
 {
     Logger             = logger;
     WebHostEnvironment = webHostEnvironment;
     Cypher             = cypher;
     FileService        = fileService;
 }
 protected void SetUp()
 {
     CypherService = new CypherService();
 }