@abc.abstractmethod<EOL><INDENT>def get_installation_search_order(self):<DEDENT>
return<EOL>
Gets an installation search order.

        The ``InstallationSearchOrder`` is supplied to an
        ``InstallationSearch`` to specify the ordering of results.

        :return: the installation search order
        :rtype: ``osid.installation.InstallationSearchOrder``


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