def startStopPimV4InterfaceNgpf(self, pimV4ObjList, action='start'):
        """
        Description
            Start or stop PIM IPv4 interface.

        Parameters
            pimV4ObjList: Provide a list of one or more PIMv4 object handles to start or stop.
                       Ex: ["/api/v1/sessions/1/ixnetwork/topology/1/deviceGroup/1/ethernet/1/ipv4/1/pimV4Interface/1", ...]

            action: start or stop
        """
        if type(pimV4ObjList) != list:
            raise IxNetRestApiException('startStopPimV4InterfaceNgpf error: The parameter pimv4ObjList must be a list of objects.')

        url = self.ixnObj.sessionUrl+'/topology/deviceGroup/ethernet/ipv4/pimV4Interface/operations/'+action
        data = {'arg1': pimV4ObjList}
        self.ixnObj.logInfo('startStopPimV4InterfaceNgpf: {0}'.format(action))
        self.ixnObj.logInfo('\t%s' % pimV4ObjList)
        response = self.ixnObj.post(url, data=data)
        self.ixnObj.waitForComplete(response, url+'/'+response.json()['id'])