public FileUploadController(FilesHelper filesHelper, FileUploadUtilities fileUploadUtilities, IPictureService pictureService) { _filesHelper = filesHelper; _filesHelper.CheckArgumentIsNull(nameof(_filesHelper)); _fileUploadUtilities = fileUploadUtilities; _fileUploadUtilities.CheckArgumentIsNull(nameof(_fileUploadUtilities)); _pictureService = pictureService; _pictureService.CheckArgumentIsNull(nameof(_pictureService)); }