@abc.abstractmethod<EOL><INDENT>def set_qualifier_hierarchy(self, qualifier_hierarchy_id):<DEDENT>
pass<EOL>
Sets the qualifier hierarchy.

        :param qualifier_hierarchy_id: the new qualifier hierarchy
        :type qualifier_hierarchy_id: ``osid.id.Id``
        :raise: ``InvalidArgument`` -- ``qualifier_hierarchy_id`` is invalid
        :raise: ``NoAccess`` -- ``Metadata.isReadOnly()`` is ``true``
        :raise: ``NullArgument`` -- ``qualifier_hierarchy_id`` is ``null``

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