private function importDump(Project $project, $folder_id)
 {
     $xml_import = new XMLDocmanImport('import:', $project->getUnixNameLowerCase(), $project->getID(), $this->wsdl_url, $this->user_login, $this->user_password, false, false, '', true, false);
     $xml_import->importPath($this->temporary_directory, $folder_id, '/' . DocmanV1_XMLExportData::ROOT_FOLDER_NAME);
 }