SpecificationFactory.php

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<?php
namespace Magento\Payment\Model\Checks;

class SpecificationFactory
{
    protected $compositeFactory;

    protected $mapping;

    public function __construct(\Magento\Payment\Model\Checks\CompositeFactory $compositeFactory, array $mapping)
    {
        $this->compositeFactory = $compositeFactory;
        $this->mapping = $mapping;
    }

    public function create($data)
    {
        $specifications = array_intersect_key($this->mapping, array_flip((array)$data));
        return $this->compositeFactory->create(['list' => $specifications]);
    }
}