xxxxx.xxxxx.campaign.areaoptions.get
        ===================================
        取得推广计划的可设置投放地域列表

def get(self):
        '''xxxxx.xxxxx.campaign.areaoptions.get
        ===================================
        取得推广计划的可设置投放地域列表'''
        request = TOPRequest('xxxxx.xxxxx.campaign.areaoptions.get')
        self.create(self.execute(request), fields=['success','result'], models={'result':AreaOption})
        return self.result