public function getClassFiles()
    {
        foreach ($this->getFlattenedAutoloadConfiguration() as $configuration) {
            $normalizedAutoloadPath = $this->normalizeAutoloadPath($configuration['mappingType'], $configuration['namespace'], $configuration['classPath']);
            if (!is_dir($normalizedAutoloadPath)) {
                continue;
            }
            foreach ($this->getClassesInNormalizedAutoloadPath($normalizedAutoloadPath, $configuration['namespace']) as $className => $classPath) {
                yield $className => $classPath;
            }
        }
    }