hostgroupNodes = mapNode.xpath("hostgroup")
            for hostgroupNode in hostgroupNodes:

                name = hostgroupNode.text
                hostgroups.append(name)

            filterNodes = mapNode.xpath("filter")

            for filterNode in filterNodes:

                name = filterNode.text
                filter = Filter(name)   
                filter.revert = (filterNode.get('revert') == 'true') 
                filters.append(filter)

            map.hostgroups = hostgroups
            map.filters = filters
            maps.append(map)
        
        return maps, backend

    def xml(self):       

        maps, backend = self.readConfig()
        dt = backend.getLastCheck()
        lastCheck = dt.strftime('%s')
        dt = backend.getCurrentDateTime()
        currentTime=dt.strftime('%s')        

        nagiosNode = etree.Element('nagios', currentTime=str(currentTime), lastCheck=str(lastCheck))