CatalogPriceFactory.php

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<?php
namespace Magento\Catalog\Model\Product;

class CatalogPriceFactory
{
    protected $objectManager;

    public function __construct(\Magento\Framework\ObjectManagerInterface $objectManager)
    {
        $this->objectManager = $objectManager;
    }

    public function create($name)
    {
        $customPriceModel = $this->objectManager->get($name);
        if (!$customPriceModel instanceof \Magento\Catalog\Model\Product\CatalogPriceInterface) {
            throw new \UnexpectedValueException(
                'Class ' . $name . ' should be an instance of \Magento\Catalog\Model\Product\CatalogPriceInterface'
            );
        }

        return $customPriceModel;
    }
}