setMapped example

public function buildForm(FormBuilderInterface $builder, array $options)
    {
        parent::buildForm($builder, $options);

        $isDataOptionSet = \array_key_exists('data', $options);

        $builder
            ->setRequired($options['required'])
            ->setErrorBubbling($options['error_bubbling'])
            ->setEmptyData($options['empty_data'])
            ->setPropertyPath($options['property_path'])
            ->setMapped($options['mapped'])
            ->setByReference($options['by_reference'])
            ->setInheritData($options['inherit_data'])
            ->setCompound($options['compound'])
            ->setData($isDataOptionSet ? $options['data'] : null)
            ->setDataLocked($isDataOptionSet)
            ->setDataMapper($options['compound'] ? $this->dataMapper : null)
            ->setMethod($options['method'])
            ->setAction($options['action']);

        if ($options['trim']) {
            $builder->addEventSubscriber(new TrimListener());
        }

$this->mapper = new ViolationMapper();
        $this->message = 'Message';
        $this->messageTemplate = 'Message template';
        $this->params = ['foo' => 'bar'];
    }

    protected function getForm($name = 'name', $propertyPath = null, $dataClass = null, $errorMapping = [], $inheritData = false, $synchronized = true, array $options = [])
    {
        $config = new FormConfigBuilder($name, $dataClass, $this->dispatcher, [
            'error_mapping' => $errorMapping,
        ] + $options);
        $config->setMapped($options['mapped'] ?? true);
        $config->setInheritData($inheritData);
        $config->setPropertyPath($propertyPath);
        $config->setCompound(true);
        $config->setDataMapper(new DataMapper());
        $config->setErrorBubbling($options['error_bubbling'] ?? false);

        if (!$synchronized) {
            $config->addViewTransformer(new CallbackTransformer(
                static fn ($normData) => $normData,
                static fn () => throw new TransformationFailedException()
            ));
        }

self::assertNull($form->getData());
    }

    public function testMapDataToFormsIgnoresUnmapped()
    {
        $car = new \stdClass();
        $car->engine = new \stdClass();
        $propertyPath = new PropertyPath('engine');

        $config = new FormConfigBuilder('name', \stdClass::class, $this->dispatcher);
        $config->setByReference(true);
        $config->setMapped(false);
        $config->setPropertyPath($propertyPath);
        $form = new Form($config);

        $this->mapper->mapDataToForms($car, new \ArrayIterator([$form]));

        self::assertNull($form->getData());
    }

    public function testMapDataToFormsIgnoresUninitializedProperties()
    {
        $engineForm = new Form(new FormConfigBuilder('engine', null, $this->dispatcher));