Set a label on the page
        :param page_id: content_id format
        :param label: label to add
        :return:

def set_page_label(self, page_id, label):
        """
        Set a label on the page
        :param page_id: content_id format
        :param label: label to add
        :return:
        """
        url = 'rest/api/content/{page_id}/label'.format(page_id=page_id)
        data = {'prefix': 'global',
                'name': label}
        return self.post(path=url, data=data)