@abc.abstractmethod<EOL><INDENT>def issue_id(self):<DEDENT>
return<EOL>
Issues a new ``Id``.

        This method creates a new Id for a predetermined authority and
        namespace.

        :return: the new ``Id``
        :rtype: ``osid.id.Id``
        :raise: ``OperationFailed`` -- unable to complete request
        :raise: ``PermissionDenied`` -- authorization failure

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