public async Task <IActionResult> AddEmployeeReceiver(int id)
        {
            var employee = await _icore.GetEmployeeById(id);

            if (employee == null)
            {
                return(NotFound());
            }
            var receiver = await _imessage.AddEmployeeReceiver(employee, await _userManager.GetUserAsync(User), DateTime.Now);

            var model = new MessageReceiverModel(receiver);

            return(Ok(new ResponseModel(model)));
        }
        public async Task <IActionResult> AddCustomerReceiver(int id)
        {
            var customer = await _res.GetById <Customer>(id, DateTime.Now);

            if (customer == null)
            {
                return(NotFound());
            }

            var receiver = await _imessage.AddCustomerReceiver(customer, await _userManager.GetUserAsync(User), DateTime.Now);

            var model = new MessageReceiverModel(receiver);

            return(Ok(new ResponseModel(model)));
        }