Issue #3465500: Use GitLab CI

Closes #3465500

src/Plugin/DMU/Fixer/NodeCollectorTrait.php

@@ -2,6 +2,9 @@
 
 namespace Drupal\drupalmoduleupgrader\Plugin\DMU\Fixer;
 
+use Pharborist\NodeCollection;
+use Pharborist\NodeInterface;
+
 /**
  * Trait used by fixers which loop through existing indexer objects and do
  * things with them.
@@ -9,8 +12,11 @@ namespace Drupal\drupalmoduleupgrader\Plugin\DMU\Fixer;
 trait NodeCollectorTrait {
 
   protected function getObjects() {
-    /** @var \Pharborist\NodeCollection $objects */
     $objects = $this->target->getIndexer($this->configuration['type'])->get($this->configuration['id']);
+    if ($objects instanceof NodeInterface) {
+      $objects = new NodeCollection([$objects]);
+    }
+    /** @var \Pharborist\NodeCollection $objects */
 
     if (isset($this->configuration['where'])) {
       $where = $this->configuration['where'];