protected function saveDevelopmentData()
    {
        foreach (array_keys($this->packageManager->getFrozenPackages()) as $packageKey) {
            $pathAndFilename = $this->getPrecompiledReflectionStoragePath() . $packageKey . '.dat';
            if (!file_exists($pathAndFilename)) {
                $this->log(sprintf('Rebuilding precompiled reflection data for frozen package %s.', $packageKey), LogLevel::DEBUG);
                $this->freezePackageReflection($packageKey);
            }
        }
    }