220 lines
		
	
	
		
			8.2 KiB
		
	
	
	
		
			PHP
		
	
	
	
	
	
			
		
		
	
	
			220 lines
		
	
	
		
			8.2 KiB
		
	
	
	
		
			PHP
		
	
	
	
	
	
<?php
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/*
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 * This file is part of the Symfony package.
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 *
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 * (c) Fabien Potencier <fabien@symfony.com>
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 *
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 * For the full copyright and license information, please view the LICENSE
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 * file that was distributed with this source code.
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 */
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namespace Symfony\Component\Serializer\Normalizer;
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use Symfony\Component\PropertyAccess\Exception\UninitializedPropertyException;
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use Symfony\Component\PropertyInfo\PropertyTypeExtractorInterface;
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use Symfony\Component\Serializer\Exception\LogicException;
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use Symfony\Component\Serializer\Mapping\ClassDiscriminatorResolverInterface;
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use Symfony\Component\Serializer\Mapping\Factory\ClassMetadataFactoryInterface;
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use Symfony\Component\Serializer\NameConverter\NameConverterInterface;
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/**
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 * Converts between objects and arrays by mapping properties.
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 *
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 * The normalization process looks for all the object's properties (public and private).
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 * The result is a map from property names to property values. Property values
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 * are normalized through the serializer.
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 *
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 * The denormalization first looks at the constructor of the given class to see
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 * if any of the parameters have the same name as one of the properties. The
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 * constructor is then called with all parameters or an exception is thrown if
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 * any required parameters were not present as properties. Then the denormalizer
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 * walks through the given map of property names to property values to see if a
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 * property with the corresponding name exists. If found, the property gets the value.
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 *
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 * @author Matthieu Napoli <matthieu@mnapoli.fr>
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 * @author Kévin Dunglas <dunglas@gmail.com>
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 */
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final class PropertyNormalizer extends AbstractObjectNormalizer
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{
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    public const NORMALIZE_PUBLIC = 1;
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    public const NORMALIZE_PROTECTED = 2;
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    public const NORMALIZE_PRIVATE = 4;
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    /**
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     * Flag to control whether fields should be output based on visibility.
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     */
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    public const NORMALIZE_VISIBILITY = 'normalize_visibility';
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    public function __construct(?ClassMetadataFactoryInterface $classMetadataFactory = null, ?NameConverterInterface $nameConverter = null, ?PropertyTypeExtractorInterface $propertyTypeExtractor = null, ?ClassDiscriminatorResolverInterface $classDiscriminatorResolver = null, ?callable $objectClassResolver = null, array $defaultContext = [])
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    {
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        parent::__construct($classMetadataFactory, $nameConverter, $propertyTypeExtractor, $classDiscriminatorResolver, $objectClassResolver, $defaultContext);
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        if (!isset($this->defaultContext[self::NORMALIZE_VISIBILITY])) {
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            $this->defaultContext[self::NORMALIZE_VISIBILITY] = self::NORMALIZE_PUBLIC | self::NORMALIZE_PROTECTED | self::NORMALIZE_PRIVATE;
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        }
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    }
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    public function getSupportedTypes(?string $format): array
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    {
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        return ['object' => true];
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    }
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    public function supportsNormalization(mixed $data, ?string $format = null, array $context = []): bool
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    {
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        return parent::supportsNormalization($data, $format) && $this->supports($data::class);
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    }
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    public function supportsDenormalization(mixed $data, string $type, ?string $format = null, array $context = []): bool
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    {
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        return parent::supportsDenormalization($data, $type, $format) && $this->supports($type);
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    }
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    /**
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     * Checks if the given class has any non-static property.
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     */
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    private function supports(string $class): bool
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    {
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        if ($this->classDiscriminatorResolver?->getMappingForClass($class)) {
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            return true;
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        }
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        $class = new \ReflectionClass($class);
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        // We look for at least one non-static property
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        do {
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            foreach ($class->getProperties() as $property) {
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                if (!$property->isStatic()) {
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                    return true;
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                }
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            }
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        } while ($class = $class->getParentClass());
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        return false;
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    }
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    protected function isAllowedAttribute(object|string $classOrObject, string $attribute, ?string $format = null, array $context = []): bool
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    {
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        if (!parent::isAllowedAttribute($classOrObject, $attribute, $format, $context)) {
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            return false;
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        }
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        try {
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            $reflectionProperty = $this->getReflectionProperty($classOrObject, $attribute);
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        } catch (\ReflectionException) {
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            return false;
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        }
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        if ($reflectionProperty->isStatic()) {
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            return false;
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        }
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        $normalizeVisibility = $context[self::NORMALIZE_VISIBILITY] ?? $this->defaultContext[self::NORMALIZE_VISIBILITY];
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        if ((self::NORMALIZE_PUBLIC & $normalizeVisibility) && $reflectionProperty->isPublic()) {
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            return true;
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        }
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        if ((self::NORMALIZE_PROTECTED & $normalizeVisibility) && $reflectionProperty->isProtected()) {
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            return true;
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        }
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        if ((self::NORMALIZE_PRIVATE & $normalizeVisibility) && $reflectionProperty->isPrivate()) {
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            return true;
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        }
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        return false;
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    }
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    protected function extractAttributes(object $object, ?string $format = null, array $context = []): array
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    {
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        $reflectionObject = new \ReflectionObject($object);
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        $attributes = [];
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        do {
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            foreach ($reflectionObject->getProperties() as $property) {
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                if (!$this->isAllowedAttribute($reflectionObject->getName(), $property->name, $format, $context)) {
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                    continue;
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                }
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                $attributes[] = $property->name;
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            }
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        } while ($reflectionObject = $reflectionObject->getParentClass());
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        return array_unique($attributes);
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    }
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    protected function getAttributeValue(object $object, string $attribute, ?string $format = null, array $context = []): mixed
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    {
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        try {
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            $reflectionProperty = $this->getReflectionProperty($object, $attribute);
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        } catch (\ReflectionException) {
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            return null;
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        }
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        if ($reflectionProperty->hasType()) {
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            return $reflectionProperty->getValue($object);
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        }
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        if (!method_exists($object, '__get') && !isset($object->$attribute)) {
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            $propertyValues = (array) $object;
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            if (($reflectionProperty->isPublic() && !\array_key_exists($reflectionProperty->name, $propertyValues))
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                || ($reflectionProperty->isProtected() && !\array_key_exists("\0*\0{$reflectionProperty->name}", $propertyValues))
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                || ($reflectionProperty->isPrivate() && !\array_key_exists("\0{$reflectionProperty->class}\0{$reflectionProperty->name}", $propertyValues))
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            ) {
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                throw new UninitializedPropertyException(\sprintf('The property "%s::$%s" is not initialized.', $object::class, $reflectionProperty->name));
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            }
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        }
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        return $reflectionProperty->getValue($object);
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    }
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    protected function setAttributeValue(object $object, string $attribute, mixed $value, ?string $format = null, array $context = []): void
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    {
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        try {
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            $reflectionProperty = $this->getReflectionProperty($object, $attribute);
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        } catch (\ReflectionException) {
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            return;
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        }
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        if ($reflectionProperty->isStatic()) {
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            return;
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        }
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        if (!$reflectionProperty->isReadOnly()) {
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            $reflectionProperty->setValue($object, $value);
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            return;
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        }
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        if (!$reflectionProperty->isInitialized($object)) {
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            $declaringClass = $reflectionProperty->getDeclaringClass();
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            $declaringClass->getProperty($reflectionProperty->getName())->setValue($object, $value);
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            return;
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        }
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        if ($reflectionProperty->getValue($object) !== $value) {
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            throw new LogicException(\sprintf('Attempting to change readonly property "%s"::$%s.', $object::class, $reflectionProperty->getName()));
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        }
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    }
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    /**
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     * @throws \ReflectionException
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     */
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    private function getReflectionProperty(string|object $classOrObject, string $attribute): \ReflectionProperty
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    {
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        $reflectionClass = new \ReflectionClass($classOrObject);
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        while (true) {
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            try {
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                return $reflectionClass->getProperty($attribute);
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            } catch (\ReflectionException $e) {
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                if (!$reflectionClass = $reflectionClass->getParentClass()) {
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                    throw $e;
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                }
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            }
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        }
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    }
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}
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