You are an expert in writing code in many different languages. Your goal is to perform code completion for the following code, keeping in mind the rest of the code and the file meta data.
    Metadata details:
    filename: system_health.go
    path of file: ./repos/magma/cwf/gateway/services/gateway_health/health/system_health
    
    the code of the file until where you have to start completion: /*
 * Copyright 2020 The Magma Authors.
 *
 * This source code is licensed under the BSD-style license found in 
    
func (c *CWAGSystemHealthProvider) updateInterfaceRouteSrcIP(iface netlink.Link, newSrcIP netlink.Addr) error {
	routes, err := netlink.RouteList(iface, netlink.FAMILY_V4)
	if err != nil {
		return err
	}
	var routeErrors []string
	for _, route := range routes {
		if route.Src.String() == newSrcIP.IP.String() {
			continue
		}
		glog.V(1).Infof("Updating route (Dst: %s, Gw: %s) to use IP '%s' as src", route.Dst, route.Gw, newSrcIP.IP)
		route.Src = newSrcIP.IP
		err = netlink.RouteReplace(&route)
		if err != nil {
			routeErrors = append(routeErrors, err.Error())
		}
	}
	if len(routeErrors) > 0 {
		return fmt.Errorf("Encountered the following errors while updating routes:\n%s\n", strings.Join(routeErrors, "\n"))
	}
	return nil
}