public function buildForm(FormBuilderInterface $builder, array $options)
    {
        parent::buildForm($builder, $options);

        $this->addEmailField($builder)
            ->addProductField($builder);
    }
public function buildForm(FormBuilderInterface $builder, array $options)
    {
        parent::buildForm($builder, $options);

        $this->addEmailField($builder)
            ->addProductField($builder);
    }
@param \Symfony\Component\Form\FormBuilderInterface $builder
@param array $options

@return void