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<?php

/*
* This file is part of the Symfony package.
*
* (c) Fabien Potencier <fabien@symfony.com>
*
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code.
*/

namespace Symfony\Component\DependencyInjection;

/**
* Reference represents a service reference.
*
* @author Fabien Potencier <fabien@symfony.com>
*
* @api
*/
class Reference
{
    private $id;
    private $invalidBehavior;
    private $strict;

    /**
* Constructor.
*
* @param string $id The service identifier
* @param int $invalidBehavior The behavior when the service does not exist
* @param bool $strict Sets how this reference is validated
*
* @see Container
*/
    public function __construct($id, $invalidBehavior = ContainerInterface::EXCEPTION_ON_INVALID_REFERENCE, $strict = true)
    {
        $this->id = strtolower($id);
        $this->invalidBehavior = $invalidBehavior;
        $this->strict = $strict;
    }

    /**
* __toString.
*
* @return string The service identifier
*/
    public function __toString()
    {
        return $this->id;
    }

    /**
* Returns the behavior to be used when the service does not exist.
*
* @return int
*/
    public function getInvalidBehavior()
    {
        return $this->invalidBehavior;
    }

    /**
* Returns true when this Reference is strict
*
* @return bool
*/
    public function isStrict()
    {
        return $this->strict;
    }
}
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