/**
* @return array(IFile) The list of the files contained in the "file" itself if this
* one is a directory, or the files contained in the parent directory if this one is
* a normal file
*/
public function listFiles($pattern = '*', $flags = AdvancedPathLib::GLOB_NORMAL)
{
if ($this->isDirectory()) {
$this->checkReadPermission();
} elseif ($this->isFile()) {
$this->getParentFile()->checkReadPermission();
}
return parent::listFiles($pattern, $flags);
}