// Email
                array(
                    'spec' => array(
                        'name' => 'email',
                        'type' => 'Zend\Form\Element\Email',
                        'validators' => array(
                            array(
                                'name' => 'DoctrineModule\Validator\NoObjectExists',
                                'options' => array(
                                    'object_manager' => $repository,
                                    'fields' => 'email'
                                )
                            )
                        ),
                        'attributes' => array(
                            'required' => 'required'
                        ),
                        'options' => array(
                            'label' => 'Email',
                        ),
                    ),
                ),