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* This file is part of the Symfony package.
* (c) Fabien Potencier <>
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code.
namespace Symfony\Component\Config\Resource;
* ResourceInterface is the interface that must be implemented by all Resource classes.
* @author Fabien Potencier <>
interface ResourceInterface
* Returns a string representation of the Resource.
* This method is necessary to allow for resource de-duplication, for example by means
* of array_unique(). The string returned need not have a particular meaning, but has
* to be identical for different ResourceInterface instances referring to the same
* resource; and it should be unlikely to collide with that of other, unrelated
* resource instances.
* @return string A string representation unique to the underlying Resource
public function __toString();
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