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EDIT :: BooleanNodeDefinition.php

<?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\Config\Definition\Builder; use Symfony\Component\Config\Definition\BooleanNode; /** * This class provides a fluent interface for defining a node. * * @author Johannes M. Schmitt <schmittjoh@gmail.com> */ class BooleanNodeDefinition extends ScalarNodeDefinition { /** * {@inheritDoc} */ public function __construct($name, NodeParentInterface $parent = null) { parent::__construct($name, $parent); $this->nullEquivalent = true; } /** * Instantiate a Node * * @return BooleanNode The node */ protected function instantiateNode() { return new BooleanNode($this->name, $this->parent); } }

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