code: protected function getLocaleString()
  	{
  		$container = System::getContainer();
  
  		return
  			'var Contao={'
  				. 'theme:"' . Backend::getTheme() . '",'
  				. 'lang:{'
  					. 'close:"' . $GLOBALS['TL_LANG']['MSC']['close'] . '",'
  					. 'collapse:"' . $GLOBALS['TL_LANG']['MSC']['collapseNode'] . '",'
  					. 'expand:"' . $GLOBALS['TL_LANG']['MSC']['expandNode'] . '",'
  					. 'loading:"' . $GLOBALS['TL_LANG']['MSC']['loadingData'] . '",'
  					. 'apply:"' . $GLOBALS['TL_LANG']['MSC']['apply'] . '"'
  				. '},'
  				. 'script_url:"' . $container->get('contao.assets.assets_context')->getStaticUrl() . '",'
  				. 'path:"' . Environment::get('path') . '",'
  				. 'request_token:"' . REQUEST_TOKEN . '",'
  				. 'referer_id:"' . $container->get('request_stack')->getCurrentRequest()->attributes->get('_contao_referer_id') . '"'
  			. '};';
  	}
docs: Return the locale string
  
  @return string