锂：新命令不起作用

Question

我按照这个指南行事Link。

然后，我在Repos.php中创建了/app/extensions/command/文件，并在命令行中运行li3，但没有看到以下消息：

COMMANDS via app
repos

我只看到以下文字：

    Lithium console started in the development environment. Use the --env=environment key to alter this.
COMMANDS via lithium
    create
    The `create` command allows you to rapidly develop your models, views, controllers, and tests
    by generating the minimum code necessary to test and run your application.

    g11n
    The `G11n` set of commands deals with the extraction and merging of message templates.

    help
    Get information about a particular class including methods, properties,
    and descriptions.

    route
    The route command lets you inspect your routes and issue requests against the router.

    test
    Runs a given set of tests and outputs the results.

See `li3 help COMMAND` for more information on a specific command.

我做错了吗？