AdminPageFramework_Zip::_addEmptyDir PHP Method

    private function _addEmptyDir(ZipArchive $oZip, $sInsidePath, $oCallable)
    {
        $sInsidePath = $this->_getFilteredArchivePath($sInsidePath, $oCallable);
        if (!strlen($sInsidePath)) {
            return;
        }
        $oZip->addEmptyDir(ltrim($sInsidePath, '/'));
    }