@utilities.arguments_not_none<EOL><INDENT>def get_all_requisite_objectives(self, objective_id):<DEDENT>
raise errors.Unimplemented()<EOL>
Gets a list of ``Objectives`` that are the requisites for the given ``Objective`` including the requistes of the requisites, and so on.

        In plenary mode, the returned list contains all of the immediate
        requisites, or an error results if an ``Objective`` is not found
        or inaccessible. Otherwise, inaccessible ``Objectives`` may be
        omitted from the list and may present the elements in any order
        including returning a unique set.

        arg:    objective_id (osid.id.Id): ``Id`` of the ``Objective``
        return: (osid.learning.ObjectiveList) - the returned
                ``Objective`` list
        raise:  NotFound - ``objective_id`` not found
        raise:  NullArgument - ``objective_id`` is ``null``
        raise:  OperationFailed - unable to complete request
        raise:  PermissionDenied - authorization failure
        *compliance: mandatory -- This method must be implemented.*