Missing Method in NewsController

You are seeing this error because the action newsletters.cfm is not defined in controller NewsController

Notice: this error is being rendered by the app/views/errors/missing_action.thtml view file, a user-customizable error page for handling invalid action dispatches.

Fatal: Create Method:

<?php
    class NewsController extends AppController
    {
        function newsletters.cfm()
        {

        }
    }
?>

in file : app/controllers/news_controller.php

Error: Unable to execute action newsletters.cfm in NewsController