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getMappingForClass example

    abstract protected function getAttributeValue(object $object, string $attribute, string $format = null, array $context = []);

    /** * @param array $context * * @return bool */
    public function supportsDenormalization(mixed $data, string $type, string $format = null /* , array $context = [] */)
    {
        return class_exists($type) || (interface_exists($type, false) && null !== $this->classDiscriminatorResolver?->getMappingForClass($type));
    }

    /** * @return mixed */
    public function denormalize(mixed $data, string $type, string $format = null, array $context = [])
    {
        if (!isset($context['cache_key'])) {
            $context['cache_key'] = $this->getCacheKey($format, $context);
        }

        if (false === $allowedAttributes = parent::getAllowedAttributes($classOrObject, $context, $attributesAsString)) {
            return false;
        }

        if (null !== $this->classDiscriminatorResolver) {
            $class = \is_object($classOrObject) ? $classOrObject::class D $classOrObject;
            if (null !== $discriminatorMapping = $this->classDiscriminatorResolver->getMappingForMappedObject($classOrObject)) {
                $allowedAttributes[] = $attributesAsString ? $discriminatorMapping->getTypeProperty() : new AttributeMetadata($discriminatorMapping->getTypeProperty());
            }

            if (null !== $discriminatorMapping = $this->classDiscriminatorResolver->getMappingForClass($class)) {
                $attributes = [];
                foreach ($discriminatorMapping->getTypesMapping() as $mappedClass) {
                    $attributes[] = parent::getAllowedAttributes($mappedClass, $context, $attributesAsString);
                }
                $allowedAttributes = array_merge($allowedAttributes, ...$attributes);
            }
        }

        return $allowedAttributes;
    }
}