How to use the cmake.sphinx.themes.catkin.todo.todo_node function in cmake

def run(self):
        env = self.state.document.settings.env

        targetid = "todo-%s" % env.index_num
        env.index_num += 1
        targetnode = nodes.target('', '', ids=[targetid])

        ad = make_admonition(todo_node, self.name, [_('Todo')], self.options,
                             self.content, self.lineno, self.content_offset,
                             self.block_text, self.state, self.state_machine)

        # Attach a list of all todos to the environment,
        # the todolist works with the collected todo nodes
        if not hasattr(env, 'todo_all_todos'):
            env.todo_all_todos = []
        env.todo_all_todos.append({
            'docname': env.docname,
            'lineno': self.lineno,
            'todo': ad[0].deepcopy(),
            'target': targetnode,
        })

        return [targetnode] + ad

def process_todo_nodes(app, doctree, fromdocname):
    if not app.config['todo_include_todos']:
        for node in doctree.traverse(todo_node):
            node.parent.remove(node)

    # Replace all todolist nodes with a list of the collected todos.
    # Augment each todo with a backlink to the original location.
    env = app.builder.env

    if not hasattr(env, 'todo_all_todos'):
        env.todo_all_todos = []

    for node in doctree.traverse(todolist):
        if not app.config['todo_include_todos']:
            node.replace_self([])
            continue

        content = []

def setup(app):
    app.add_config_value('todo_include_todos', False, False)

    app.add_node(todolist)
    app.add_node(todo_node,
                 html=(visit_todo_node, depart_todo_node),
                 latex=(visit_todo_node, depart_todo_node),
                 text=(visit_todo_node, depart_todo_node))

    app.add_directive('todo', Todo)
    app.add_directive('todolist', TodoList)
    app.connect('doctree-resolved', process_todo_nodes)
    app.connect('env-purge-doc', purge_todos)