public ViewsFormInterface::getForm(ViewEntityInterface $view, $display_id, $js)
Creates a new instance of this form.
@todo When https://www.drupal.org/node/1843224 is in, this will return \Drupal\Core\Ajax\AjaxResponse instead of the array of AJAX commands.
Parameters
\Drupal\views\ViewEntityInterface $view: The view being edited.
string|null $display_id: The display ID being edited, or NULL to load the first available display.
string $js: If this is an AJAX form, it will be the string 'ajax'.