プラグインのモデルからメール送信

App::uses('BcAppController', 'Controller');
$BcAppController = new BcAppController();
$body = '';
$email = 'test@test.com';
$BcAppControllerls->sendMail($email, 'TEST', $body, array('template'=>'plugin_name.default'));

PHP Fatal error:  Call to a member function is() on null in /path/to/DocumentRoot/lib/Baser/Controller/BcAppController.php on line 179

App::uses('CakeEmail', 'Network/Email');
$Email = new CakeEmail();