protected function getComposerLockInstalled($rootPackageRequirements)
    {
        $rawInstalled = [[]];

        // Find composer.lock file
        $finder = new Finder(['lock'], $this->config->get('exclude'));
        $files = $finder->fetch($this->config->get('files'));

        // List all composer.lock found in the project.
        foreach ($files as $filename) {
            if (false === \strpos($filename, 'composer.lock')) {
                continue;
            }
            $composerLockJson = (object)\json_decode(\file_get_contents($filename));

            if (!isset($composerLockJson->packages)) {
                continue;
            }

            $installed = [];
            foreach ($composerLockJson->packages as $package) {
                if (!\in_array($package->name, $rootPackageRequirements, true)) {
                    continue;
                }

                $installed[$package->name] = \preg_replace('#[^.\d]#', '', $package->version);
            }

            $rawInstalled[] = $installed;
        }

        return \call_user_func_array('array_merge', $rawInstalled);
    }