Part of lp.soyuz.browser.builder View In Hierarchy
| Method | change_details | Update the builder with the data from the form. | 
| Method | next_url | Redirect back to the builder-index page. | 
| Method | cancel_url | Return the url to which we want to go to if user cancels. | 
| Method | page_title | Return a relevant page title for this view. | 
| Method | label | The form label should be the same as the pagetitle. |