def get_agent_record(self, agent_record_type):
raise errors.Unsupported()<EOL>
Gets the agent record corresponding to the given ``Agent`` record ``Type``.

        This method is used to retrieve an object implementing the
        requested record. The ``agent_record_type`` may be the ``Type``
        returned in ``get_record_types()`` or any of its parents in a
        ``Type`` hierarchy where ``has_record_type(agent_record_type)``
        is ``true`` .

        :param agent_record_type: the type of the record to retrieve
        :type agent_record_type: ``osid.type.Type``
        :return: the agent record
        :rtype: ``osid.authentication.records.AgentRecord``
        :raise: ``NullArgument`` -- ``agent_record_type`` is ``null``
        :raise: ``OperationFailed`` -- unable to complete request
        :raise: ``Unsupported`` -- ``has_record_type(agent_record_type)`` is ``false``

        *compliance: mandatory -- This method must be implemented.*