...
    /**
     * @param \Symfony\Component\Form\FormBuilderInterface $formBuilder
     * @param \Ibexa\Contracts\FieldTypePage\FieldType\Page\Block\Definition\BlockDefinition $blockDefinition
     * @param \Ibexa\Contracts\FieldTypePage\FieldType\Page\Block\Definition\BlockAttributeDefinition $blockAttributeDefinition
     * @param array $constraints
     *
     * @return \Symfony\Component\Form\FormBuilderInterface
     *
     * @throws \Exception
     */
    public function map(
        FormBuilderInterface $formBuilder,
        BlockDefinition $blockDefinition,
        BlockAttributeDefinition $blockAttributeDefinition,
        array $constraints = []
    ): FormBuilderInterface {
        $blockDefinition = $this->blockDefinitionFactory->getBlockDefinition('collection');

        $locationListAttribute = $blockDefinition->getAttributes()['locationlist'];

        return $formBuilder->create(
            'value',
            AttributeLocationListType::class,
            [
                'match' => $locationListAttribute->getOptions()['match'],
                'constraints' => $constraints,
            ]
        );
    }
..