From c24ed90a9380a1a37718bd58f71c357dac469f75 Mon Sep 17 00:00:00 2001
From: Pierre Rolland <roll.pierre@gmail.com>
Date: Sun, 16 Sep 2018 19:44:48 +0200
Subject: [PATCH] Fixed collection merge

---
 Builder/EntityBuilder.php | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/Builder/EntityBuilder.php b/Builder/EntityBuilder.php
index 229c79f..0a0f0e0 100644
--- a/Builder/EntityBuilder.php
+++ b/Builder/EntityBuilder.php
@@ -232,7 +232,7 @@ private function mergeCollection(
     private function removeItemsNotInRequest($entityValues, array $requestValues, $entityClass)
     {
         if (CollectionUtils::isEmpty($entityValues)) {
-            return null;
+            return [];
         }
 
         $identifiers = $this->entityManager->getClassMetadata($entityClass)->getIdentifierFieldNames();