@abc.abstractmethod<EOL><INDENT>def get_installations_by_search(self, installation_query, installation_search):<DEDENT>
return<EOL>
Gets the search results matching the given search query using the given search.

        :param installation_query: the installation query
        :type installation_query: ``osid.installation.InstallationQuery``
        :param installation_search: the installation search
        :type installation_search: ``osid.installation.InstallationSearch``
        :return: the returned search results
        :rtype: ``osid.installation.InstallationSearchResults``
        :raise: ``NullArgument`` -- ``installation_query`` or ``installation_search`` is ``null``
        :raise: ``OperationFailed`` -- unable to complete request
        :raise: ``PermissionDenied`` -- authorization failure
        :raise: ``Unsupported`` -- ``installation_search`` or ``installation_query`` is not of this service

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