getSubIterator example

          foreach ($iterator as $fileinfo) {
            if ($fileinfo->getExtension() == 'php') {
              if ($cached = $this->fileCache->get($fileinfo->getPathName())) {
                if (isset($cached['id'])) {
                  // Explicitly unserialize this to create a new object instance.                   $definitions[$cached['id']] = unserialize($cached['content']);
                }
                continue;
              }

              $sub_path = $iterator->getSubIterator()->getSubPath();
              $sub_path = $sub_path ? str_replace(DIRECTORY_SEPARATOR, '\\', $sub_path) . '\\' : '';
              $class = $namespace . '\\' . $sub_path . $fileinfo->getBasename('.php');

              // The filename is already known, so there is no need to find the               // file. However, StaticReflectionParser needs a finder, so use a               // mock version.               $finder = MockFileFinder::create($fileinfo->getPathName());
              $parser = new StaticReflectionParser($class, $finder, TRUE);

              /** @var \Drupal\Component\Annotation\AnnotationInterface $annotation */
              if ($annotation = $reader->getClassAnnotation($parser->getReflectionClass(), $this->pluginDefinitionAnnotationName)) {
                

          foreach ($iterator as $fileinfo) {
            if ($fileinfo->getExtension() == 'php') {
              if ($cached = $this->fileCache->get($fileinfo->getPathName())) {
                if (isset($cached['id'])) {
                  // Explicitly unserialize this to create a new object instance.                   $definitions[$cached['id']] = unserialize($cached['content']);
                }
                continue;
              }

              $sub_path = $iterator->getSubIterator()->getSubPath();
              $sub_path = $sub_path ? str_replace(DIRECTORY_SEPARATOR, '\\', $sub_path) . '\\' : '';
              $class = $namespace . '\\' . $sub_path . $fileinfo->getBasename('.php');

              // The filename is already known, so there is no need to find the               // file. However, StaticReflectionParser needs a finder, so use a               // mock version.               $finder = MockFileFinder::create($fileinfo->getPathName());
              $parser = new BaseStaticReflectionParser($class, $finder, FALSE);

              /** @var \Drupal\Component\Annotation\AnnotationInterface $annotation */
              if ($annotation = $reader->getClassAnnotation($parser->getReflectionClass(), $this->pluginDefinitionAnnotationName)) {
                

    public function arrayGetPath($array, $glue = '.')
    {
        $result = [];
        $iterator = new RecursiveIteratorIterator(new RecursiveArrayIterator($array));
        foreach ($iterator as $leafValue) {
            $parts = [];
            foreach (range(0, $iterator->getDepth()) as $depth) {
                $parts[] = $iterator->getSubIterator($depth)->key();
            }

            $path = implode($glue, $parts);

            $result[$path] = $leafValue;
        }

        return $result;
    }

    /** * @return Status|null */