public IActionResult GetFrequencies()
        {
            List <Frequence> lstFrequencies = new List <Frequence>();

            try
            {
                using (IMasterBL MasterBL = new MasterBL())
                {
                    lstFrequencies = MasterBL.LoadFrequencies();
                }

                return(Ok(lstFrequencies));
            }
            catch (Exception ex)
            {
                return(StatusCode(500, ex));
            }
        }