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<?php
namespace League\JsonGuard\Constraint\DraftFour\Format;
use League\JsonGuard\Validator;
interface FormatExtensionInterface
{
/**
* @param string $value The value to validate
* @param \League\JsonGuard\Validator $validator
*
* @return \League\JsonGuard\ValidationError|null A ValidationError if validation fails, otherwise null.
*/
public function validate($value, Validator $validator);
}