Using-extended-form-with-zend-form-annotation-builder.php

<?php

namespace App {
    include_once '../vendor/autoload.php';
}

namespace App\Entity {

    use Zend\Form\Annotation;

    /**
     * Class Model
     *
     * @package App\Entity
     * @Annotation\Type("App\Form\BookForm")
     */
    class Model
    {
        /**
         * @var string
         * @Annotation\Options({"label":"Your stuff"})
         */
        protected $something;

        /**
         * @return string
         */
        public function getSomething()
        {
            return $this->something;
        }

        /**
         * @param string $something
         * @return $this
         */
        public function setSomething($something)
        {
            $this->something = $something;
            return $this;
        }
    }
}

namespace App\Form {

    use Zend\Form\Element\Submit;
    use Zend\Form\Form;

    class BookForm extends Form
    {
        public function __construct()
        {
            parent::__construct('my-form');
            $this->add(new Submit('submit', ['label' => 'save']));
        }
    }
}

namespace App\Controller {

    use App\Entity\Model;
    use App\Form\BookForm;
    use Zend\Form\Annotation\AnnotationBuilder;
    use Zend\Mvc\Controller\AbstractActionController;

    class IndexController extends AbstractActionController
    {
        public function indexAction()
        {
            $builder = new AnnotationBuilder();
            $entity  = new Model();
            $form    = $builder->createForm($entity);
            if ($form instanceof BookForm) {
                echo 'Book form' . PHP_EOL;
                echo $form->get('submit')->getLabel() . PHP_EOL;
            } else {
                echo 'Not a book Form' . PHP_EOL;
            }
        }
    }

    $ctrl = new IndexController();
    $ctrl->indexAction();
}

Answer for stockoverflow question http://stackoverflow.com/questions/12002722/using-annotation-builder-in-extended-zend-form-class/29446505#29446505