Retrieve the annotations for this item from the server

        :type atype: String
        :param atype: return only results with a matching Type field
        :type label: String
        :param label: return only results with a matching Label field

        :rtype: String
        :returns: the annotations as a JSON string

        :raises: APIError if the API request is not successful

def get_annotations(self, atype=None, label=None):
        """ Retrieve the annotations for this item from the server

        :type atype: String
        :param atype: return only results with a matching Type field
        :type label: String
        :param label: return only results with a matching Label field

        :rtype: String
        :returns: the annotations as a JSON string

        :raises: APIError if the API request is not successful


        """
        return self.client.get_item_annotations(self.url(), atype, label)