@abc.abstractmethod<EOL><INDENT>def apply_qualifier_sequencing(self, qualifier_search_order):<DEDENT>
pass<EOL>
Applies a qualifier search order to this vault.

        :param qualifier_search_order: the qualifier search order
        :type qualifier_search_order: ``osid.authorization.QualifierSearchOrder``
        :raise: ``NullArgument`` -- ``qualifier_search_order`` is ``null``
        :raise: ``OperationFailed`` -- unable to complete request
        :raise: ``PermissionDenied`` -- authorization failure occurred
        :raise: ``Unsupported`` -- ``qualifier_search_order`` not of this service

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