get item relations

kernel/EntityRelation.php

@@ -185,4 +185,19 @@ class EntityRelation
             }
         }
     }
+
+    public function getEntityAdditionalProperty(string $entity, Model $model): array
+    {
+        $relations = $this->getEntityRelationsBySlug($entity);
+        if ($relations){
+            foreach ($relations as $relation){
+                $moduleClass = $this->getAdditionalPropertyClassBySlug($relation);
+                if ($moduleClass and method_exists($moduleClass, "getItems")) {
+                    return $moduleClass->getItems($entity, $model);
+                }
+            }
+        }
+
+        return [];
+    }
 }