public async Task <IActionResult> AddCoownerAsync([FromBody] RestaurantCoownerModel model)
        {
            if (!ModelState.IsValid)
            {
                return(StatusCode((int)HttpStatusCode.InternalServerError, GetErrorList(ModelState)));
            }

            EmployersRestaurants result;

            try
            {
                People currentUser = this.GetCurrentUser();
                result = await Service.AddCoownerAsync(
                    currentUser.ThePersonAsEmployer.Id,
                    model.RestaurantId, model.EmployerId);
            }
            catch (Exception ex)
            {
                return(StatusCode((int)HttpStatusCode.InternalServerError, GetErrorList(ex)));
            }

            return(Ok(result));
        }