checkTypeChange example

continue;
            }

            if ($command->getDefinition()->getClass() !== CategoryDefinition::class) {
                continue;
            }

            if (!isset($command->getPayload()['type'])) {
                continue;
            }

            $violationList->addAll($this->checkTypeChange($command, $event));
        }

        if ($violationList->count() > 0) {
            $event->getExceptions()->add(new WriteConstraintViolationException($violationList));

            return;
        }
    }

    private function checkTypeChange(WriteCommand $command, PostWriteValidationEvent $event): ConstraintViolationListInterface
    {