def open(self, iniFile, username, password=None):
        """
            Opens a new instance of vss database.
        """
        super(Database, self).guard();
        self.__vss.Open(iniFile, username);
        self.vssItem = self.__vss.VSSItem(VSS_ROOT_FOLDER, False);

            Opens a new instance of vss database.
        
recipes/Python/473884_VSS_Integration_Module/recipe-473884.py