Missing Method in WorkinggroupsController

You are seeing this error because the action www.cdc.gov is not defined in controller WorkinggroupsController

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 WorkinggroupsController extends AppController
    {
        function www.cdc.gov()
        {

        }
    }
?>

in file : app/controllers/workinggroups_controller.php

Error: Unable to execute action www.cdc.gov in WorkinggroupsController