<?php

namespace Composer\Downloader;

use Composer\Package\PackageInterface;

/**
 * DVCS Downloader interface.
 *
 * @author James Titcumb <james@asgrim.com>
 */
interface DvcsDownloaderInterface
{
    /**
     * Checks for unpushed changes to a current branch
     *
     * @param  PackageInterface $package package directory
     * @param  string           $path    package directory
     * @return string|null      changes or null
     */
    public function getUnpushedChanges(PackageInterface $package, string $path): ?string;
}
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