public function addManifestsTranslations( tao_helpers_translation_POFile $poFile)
    {
        
        $this->outVerbose("Adding all manifests messages to extension '" . $this->options['extension'] . "'");
    	
        $rootDir = dirname(__FILE__) . '/../../';
        $directories = scandir($rootDir);
        $exceptions = array('generis', 'tao', '.*');
        
        if (false === $directories) {
        	$this->err("The TAO root directory is not readable. Please check permissions on this directory.", true);	
        } else {
        	foreach ($directories as $dir) {
				if (is_dir($rootDir . $dir) && !in_array($dir, $exceptions)) {
					// Maybe it should be read.
					if (in_array('.*', $exceptions) && $dir[0] == '.') {
						continue;	
					} else {
						// Is this a TAO extension ?
					    $file = MenuService::getStructuresFilePath($this->options['extension']);
					    if (!is_null($file)) {
					        $structureExtractor = new tao_helpers_translation_StructureExtractor(array($file));
						    $structureExtractor->extract();
					    	$poFile->addTranslationUnits($structureExtractor->getTranslationUnits());
							$this->outVerbose("Manifest of extension '" . $dir . "' added to extension '" . $this->options['extension'] . "'");
						}
					}
				}
        	}
        }
        
    }