Validating deserialized messages (e.g. Domain Events with payload) when re-constructing Domain Models about php-ddd HOT 8 OPEN

        $self = new self();         $self->quantity = $array['quantity'];         $self->subtotal = $array['subtotal'];         $self->total = $array['total'];         return $self;

    public function customPrices(): CustomPrices
    {
        if (null === $this->customPrices) {
            $this->customPrices = new CustomPrices(array_map(function(array $rate) {
                return CustomPrice::fromArray($rate);
            }, $this->payload['customPrices']));
        }

        return $this->customPrices;
    }

final class Basket extends AggregateRoot
{
    public static function startShoppingSession(
        ShoppingSession $shoppingSession,
        BasketId $basketId)
    {
        //Start new aggregate lifecycle by creating an "empty" instance
        $self = new self();

        //Record the very first domain event of the new aggregate
        //Note: we don't pass the value objects directly to the event but use their
        //primitive counterparts. This makes it much easier to work with the events later
        //and we don't need complex serializers when storing events.
        $self->recordThat(ShoppingSessionStarted::occur($basketId->toString(), [
            'shopping_session' => $shoppingSession->toString()
        ]));

        //Return the new aggregate
        return $self;
    }