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diff --git a/web/modules/contrib/drupalmoduleupgrader/src/DeriverBase.php b/web/modules/contrib/drupalmoduleupgrader/src/DeriverBase.php
new file mode 100644
index 000000000..e8b251ad9
--- /dev/null
+++ b/web/modules/contrib/drupalmoduleupgrader/src/DeriverBase.php
@@ -0,0 +1,40 @@
+<?php
+
+namespace Drupal\drupalmoduleupgrader;
+
+use Drupal\Core\Plugin\Discovery\ContainerDeriverInterface;
+use Drupal\Core\StringTranslation\StringTranslationTrait;
+use Drupal\Core\StringTranslation\TranslationInterface;
+use Symfony\Component\DependencyInjection\ContainerInterface;
+
+/**
+ * Base class for DMU's plugin derivers. Sets up the translation service and
+ * provides a basic implementation of DeriverInterface::getDerivativeDefinition().
+ */
+abstract class DeriverBase implements ContainerDeriverInterface {
+
+  use StringTranslationTrait;
+
+  public function __construct(TranslationInterface $translator) {
+    $this->stringTranslation = $translator;
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public static function create(ContainerInterface $container, $base_plugin_id) {
+    return new static($container->get('string_translation'));
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function getDerivativeDefinition($derivative_id, $base_definition) {
+    $derivatives = $this->getDerivativeDefinitions($base_definition);
+
+    if (isset($derivatives[$derivative_id])) {
+      return $derivatives[$derivative_id];
+    }
+  }
+
+}