Get the page (content) property e.g. get key of hash
        :param page_id: content_id format
        :param page_property_key: key of property
        :return:

def get_page_property(self, page_id, page_property_key):
        """
        Get the page (content) property e.g. get key of hash
        :param page_id: content_id format
        :param page_property_key: key of property
        :return:
        """
        url = 'rest/api/content/{page_id}/property/{key}'.format(page_id=page_id,
                                                                 key=str(page_property_key))
        return self.get(path=url)