public function ContactDetailsForm()
 {
     $cart = ShoppingCart::curr();
     if (!$cart) {
         return false;
     }
     $config = new CheckoutComponentConfig(ShoppingCart::curr());
     $config->addComponent(new CustomerDetailsCheckoutComponent());
     $form = new CheckoutForm($this->owner, 'ContactDetailsForm', $config);
     $form->setRedirectLink($this->NextStepLink());
     $form->setActions(new FieldList(new FormAction("checkoutSubmit", "Continue")));
     $this->owner->extend('updateContactDetailsForm', $form);
     return $form;
 }