public async Task <IActionResult> ChangeDepartment(int id)
        {
            if (id < 1)
            {
                return(BadRequest("Invalid DepartmentID given"));
            }
            if (!_repository.IsInDepartment(id))
            {
                return(Unauthorized("You are not allowed to access this resource"));
            }
            await _repository.ChangeDepartment(id);

            return(Ok("Department changed"));
        }