public async Task ValidateAsync(ICarContainer carContainer)
{
if (carContainer == null)
{
throw new ArgumentNullException(nameof(carContainer));
}
var rent = await this.GetBy(carContainer);
if (carContainer.CarId.HasValue && rent == null)
{
throw new InvalidOperationException($"Rent not found by id {carContainer.CarId}");
}
}
