def lists
      response = @@soap.getCampaignLists(:apiKey => @apiKey, :campaignID => @campaignID )
      lists = handle_response response.campaign_GetListsResult
      lists.collect do |list|  
        List.new(list.listID, list.name, :apiKey=> @apiKey)
      end
    end
def lists
      response = @@soap.getCampaignLists(:apiKey => @apiKey, :campaignID => @campaignID )
      lists = handle_response response.campaign_GetListsResult
      lists.collect do |list|  
        List.new(list.listID, list.name, :apiKey=> @apiKey)
      end
    end
Returns an array of Campaigning::List objects that a given campaign was sent to.

*Return*:

*Success*: Upon a successful call, this method will return a collection of Campaigning::List object.

*Error*: An Exception containing the cause of the error will be raised.