Using Helpers in Codeception

gistfile1.php

<?php

namespace Codeception\Module;

class WebHelper extends \Codeception\Module
{
    public function seeUserAuthenticated($account, $username, $password)
    {
        $b = $this->getModule('PhpBrowser');
        $b->fillField('fsaccount', $account);
        $b->fillField('fsusername', $username);
        $b->fillField('fspassword', $password);
        $b->click('loginbtn');
        $b->see('Dashboard');
    }
}