public function unlinkDropins(PackageInterface $package)
    {
        $content_dir = realpath($this->getContentPath());
        $dropins_dir = realpath($this->getInstallPath($package) . '/dropins/');

        // Link dropins not yet added.
        foreach (new \DirectoryIterator($dropins_dir) as $dropin) {
            if ($dropin->isDot()) {
                continue;
            }

            $src  = $content_dir . '/' . $dropin->getFilename();
            $dest = $dropins_dir . '/' . $dropin->getFilename();

            if (file_exists($src)) {
                $this->io->write('<info>Unlinking ' . $this->filesystem->findShortestPath($src, $dest) . '</info>');
                unlink($src);
            }
        }
    }