Missing Method in VolunteersController

You are seeing this error because the action index.cfm is not defined in controller VolunteersController

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 VolunteersController extends AppController
    {
        function index.cfm()
        {

        }
    }
?>

in file : app/controllers/volunteers_controller.php

Error: Unable to execute action index.cfm in VolunteersController