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diff --git a/web/modules/contrib/entity/src/Revision/RevisionableContentEntityBase.php b/web/modules/contrib/entity/src/Revision/RevisionableContentEntityBase.php
new file mode 100644
index 000000000..a7ec15ee9
--- /dev/null
+++ b/web/modules/contrib/entity/src/Revision/RevisionableContentEntityBase.php
@@ -0,0 +1,30 @@
+<?php
+
+namespace Drupal\entity\Revision;
+
+use Drupal\Core\Entity\RevisionableContentEntityBase as BaseRevisionableContentEntityBase;
+use Drupal\Core\Entity\ContentEntityBase;
+
+/**
+ * Improves the url route handling of core's revisionable content entity base.
+ */
+abstract class RevisionableContentEntityBase extends BaseRevisionableContentEntityBase {
+
+  /**
+   * {@inheritdoc}
+   */
+  protected function urlRouteParameters($rel) {
+    $uri_route_parameters = [];
+
+    if ($rel != 'collection') {
+      // The entity ID is needed as a route parameter.
+      $uri_route_parameters[$this->getEntityTypeId()] = $this->id();
+    }
+    if (strpos($this->getEntityType()->getLinkTemplate($rel), $this->getEntityTypeId() . '_revision') !== FALSE) {
+      $uri_route_parameters[$this->getEntityTypeId() . '_revision'] = $this->getRevisionId();
+    }
+
+    return $uri_route_parameters;
+  }
+
+}