@abc.abstractmethod<EOL><INDENT>def get_functions_by_record_type(self, function_record_type):<DEDENT>
return<EOL>
Gets a ``FunctionList`` containing the given function record ``Type``.

        In plenary mode, the returned list contains all known functions
        or an error results. Otherwise, the returned list may contain
        only those functions that are accessible through this session.

        :param function_record_type: a function record type
        :type function_record_type: ``osid.type.Type``
        :return: the returned ``Function`` list
        :rtype: ``osid.authorization.FunctionList``
        :raise: ``NullArgument`` -- ``function_record_type`` is ``null``
        :raise: ``OperationFailed`` -- unable to complete request
        :raise: ``PermissionDenied`` -- authorization failure

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