Synnefo

    **send_feedback(**\ token, message, data\ **)**

        Using a user's authentication token send some feedback to

        astakos service. Additional information about the service

        client status can be given in the data variable.

        In case of success returns nothing.

        Otherwise raise an AstakosClientException exception.

    **get_endpoints(**\ token, belongs_to, marker, limit\ **)**

        Given a user's authentication token, request registered

        endpoints from astakos service. If belongs_to is given (uuid)

        check that the token belongs to this user. If marker is given

        (int) return endpoints (ordered by ID) whose ID is higher than

        the marker. Limit (int) specifies the maximum number of

        endpoints to return. Return a json formatted dictionary containing

        information about registered endpoints.

        .. warning:: *get_endpoints* api call encodes the user's token inside

            the url. It's security unsafe to use it (both astakosclient

            and nginx tend to log requested urls).