def METHOD_NAME(self):
    c = self.c
    # Add an @settings, @persistence and @gnx nodes.
    settings_p = c.lastTopLevel()
    settings_p.b = '@settings'
    persistence_p = settings_p.insertAfter()
    persistence_p.h = '@persistence'
    gnx_p = persistence_p.insertAsLastChild()
    gnx_p.h = '@gnxs'
    gnx_p.b = (
        'gnx: ekr.20140923080452\n'
        'unl: node1\n'
    )