def regenerateTrafficItems(self, trafficItemList='all'):
        """
        Description
            Performs regenerate on Traffic Items.

        Parameter
            trafficItemList: 'all' will automatically regenerate from all Traffic Items.
                             Or provide a list of Traffic Items.
                             ['/api/v1/sessions/1/ixnetwork/traffic/trafficItem/1', ...]
        """
        if trafficItemList == 'all':
            trafficItemList = []
            numOfTrafficItem = 0
            response = self.ixnObj.get(self.ixnObj.sessionUrl + '/traffic/trafficItem'  + "?skip=" + str(numOfTrafficItem) + "&take=100")
            while numOfTrafficItem < response.json()['count']:
                for eachTrafficItem in response.json()['data']:
                    trafficItemList.append(eachTrafficItem['links'][0]['href'])
                numOfTrafficItem += 100
                response = self.ixnObj.get(self.ixnObj.sessionUrl + '/traffic/trafficItem'  + "?skip=" + str(numOfTrafficItem) + "&take=100")
        else:
            if type(trafficItemList) != list:
                trafficItemList = trafficItemList.split(' ')

        url = self.ixnObj.sessionUrl+"/traffic/trafficItem/operations/generate"
        data = {"arg1": trafficItemList}
        self.ixnObj.logInfo('Regenerating traffic items: %s' % trafficItemList)
        response = self.ixnObj.post(url, data=data)
        self.ixnObj.waitForComplete(response, url+'/'+response.json()['id'])