improved first step of create order form

web/modules/custom/materio_commerce/src/Routing/AutocompleteRouteSubscriber.php

@@ -0,0 +1,16 @@
+<?php
+
+namespace Drupal\materio_commerce\Routing;
+
+use Drupal\Core\Routing\RouteSubscriberBase;
+use Symfony\Component\Routing\RouteCollection;
+
+class AutocompleteRouteSubscriber extends RouteSubscriberBase {
+
+  public function alterRoutes(RouteCollection $collection) {
+    if ($route = $collection->get('system.entity_autocomplete')) {
+      $route->setDefault('_controller', '\Drupal\materio_commerce\Controller\EntityAutocompleteController::handleAutocomplete');
+    }
+  }
+
+}