def addActivities(connection, sessionUrl, activityListPerCommunity):
    communityListUrl = "%s/ixload/test/activeTest/communityList" % sessionUrl
    communityList = connection.httpGet(url=communityListUrl)

    for communityName, activityList in iteritems(activityListPerCommunity):
        community = getItemByName(communityList, communityName)

        if community is None:
            raise Exception('Community %s cannot be found.' % communityName)

        activityListUrl = "%s/%s/activityList" % (communityListUrl, community.objectID)
        for activityType in activityList:
            options = {}
            options.update({'protocolAndType': activityType})
            performGenericPost(connection, activityListUrl, options)