Page callback: Presents the menu edit form.
\Drupal\system\Plugin\Core\Entity\Menu $menu: The menu to edit.
array A form array as expected by drupal_render().
function menu_menu_edit(Menu $menu) {
drupal_set_title(t('Edit menu %label', array(
'%label' => $menu
->label(),
)), PASS_THROUGH);
return entity_get_form($menu);
}