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<?php
/**
 * Copyright © Magento, Inc. All rights reserved.
 * See COPYING.txt for license details.
 */
namespace Magento\Framework\DataObject\Copy;

class Config
{
    /**
     * @var \Magento\Framework\DataObject\Copy\Config\Data
     */
    protected $_dataStorage;

    /**
     * @param \Magento\Framework\DataObject\Copy\Config\Data $dataStorage
     */
    public function __construct(\Magento\Framework\DataObject\Copy\Config\Data $dataStorage)
    {
        $this->_dataStorage = $dataStorage;
    }

    /**
     * Get fieldsets by $path
     *
     * @param string $path
     * @return array
     */
    public function getFieldsets($path)
    {
        return $this->_dataStorage->get($path);
    }

    /**
     * Get the fieldset for an area
     *
     * @param string $name fieldset name
     * @param string $root fieldset area, could be 'admin'
     * @return null|array
     */
    public function getFieldset($name, $root = 'global')
    {
        $fieldsets = $this->getFieldsets($root);
        if (empty($fieldsets)) {
            return null;
        }
        return $fieldsets[$name] ?? null;
    }
}