@abc.abstractmethod<EOL><INDENT>def has_parents(self, id_):<DEDENT>
return<EOL>
Tests if this ``Id`` contains any parents.

        :param id: the ``Id`` to query
        :type id: ``osid.id.Id``
        :return: ``true`` if this ``Id`` contains parents, ``false`` otherwise
        :rtype: ``boolean``
        :raise: ``NotFound`` -- ``id`` is not found
        :raise: ``NullArgument`` -- ``id`` is ``null``
        :raise: ``OperationFailed`` -- unable to complete request
        :raise: ``PermissionDenied`` -- authorization failure

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