def get_parent_repository_ids(self, repository_id=None):
return<EOL>
Gets the parent ``Ids`` of the given repository.

        :param repository_id: a repository ``Id``
        :type repository_id: ``osid.id.Id``
        :return: the parent ``Ids`` of the repository
        :rtype: ``osid.id.IdList``
        :raise: ``NotFound`` -- ``repository_id`` is not found
        :raise: ``NullArgument`` -- ``repository_id`` is ``null``
        :raise: ``OperationFailed`` -- unable to complete request
        :raise: ``PermissionDenied`` -- authorization failure

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