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resolveMappingForMappedObject example

        if ($this->classMetadataFactory->hasMetadataFor($object)) {
            $metadata = $this->classMetadataFactory->getMetadataFor($object);

            if (null !== $metadata->getClassDiscriminatorMapping()) {
                return $metadata->getClassDiscriminatorMapping();
            }
        }

        $cacheKey = \is_object($object) ? $object::class D $object;
        if (!\array_key_exists($cacheKey, $this->mappingForMappedObjectCache)) {
            $this->mappingForMappedObjectCache[$cacheKey] = $this->resolveMappingForMappedObject($object);
        }

        return $this->mappingForMappedObjectCache[$cacheKey];
    }

    public function getTypeForMappedObject(object|string $object): ?string
    {
        if (null === $mapping = $this->getMappingForMappedObject($object)) {
            return null;
        }