User Group Module

Hi Guys!
Id like to display members from a particular group. I have the following code to display all members of the site but i would like to limit it to a particular group. Thanks for any help you can provide!

<?

require_once( JPATH_ADMINISTRATOR . '/components/com_easysocial/includes/foundry.php' );





$model  = FD::model('Users');

$users = $model->getUsers();



foreach ($users as $user) {



    $gr = FD::user($user->id);

    echo $gr->getPermalink($options);

    echo $gr->getName($options);





}

?>

As always, THANKS!
Benjamin