diff --git a/abstractions/php/src/Serialization/ParseNode.php b/abstractions/php/src/Serialization/ParseNode.php
index ce4f2b7ba8..cfa07a0900 100644
--- a/abstractions/php/src/Serialization/ParseNode.php
+++ b/abstractions/php/src/Serialization/ParseNode.php
@@ -8,6 +8,7 @@
 use Microsoft\Kiota\Abstractions\Types\Byte;
 use Microsoft\Kiota\Abstractions\Types\Date;
 use Microsoft\Kiota\Abstractions\Types\Time;
+use Psr\Http\Message\StreamInterface;
 
 interface ParseNode {
     /**
@@ -98,6 +99,11 @@ public function getEnumValue(string $targetEnum): ?Enum;
      */
     public function getByteValue(): ?Byte;
 
+    /**
+     * Get a Stream from node.
+     * @return StreamInterface|null
+     */
+    public function getBinaryContent(): ?StreamInterface;
     /**
      * Gets the callback called before the node is deserialized.
      * @return callable the callback called before the node is deserialized.
diff --git a/serialization/php/json/src/JsonParseNode.php b/serialization/php/json/src/JsonParseNode.php
index 2fc6fe4e7f..6f31eb9547 100644
--- a/serialization/php/json/src/JsonParseNode.php
+++ b/serialization/php/json/src/JsonParseNode.php
@@ -122,19 +122,26 @@ private function assignFieldValues($result): void {
         if (is_a($result, Parsable::class)){
             $fieldDeserializers = $result->getFieldDeserializers();
         }
-
+        $isAdditionalDataHolder = false;
+        $additionalData = [];
+        if (is_a($result, AdditionalDataHolder::class)) {
+            $isAdditionalDataHolder = true;
+            $additionalData = $result->getAdditionalData();
+        }
         foreach ($this->jsonNode as $key => $value){
             $deserializer = $fieldDeserializers[$key] ?? null;
 
             if ($deserializer !== null){
                 $deserializer($result, new JsonParseNode($value));
-            } else if (is_a($result, AdditionalDataHolder::class)) {
-                $data = $result->getAdditionalData();
+            } else {
                 $key = (string)$key;
-                $data[$key] = $value;
-                $result->setAdditionalData($data);
+                $additionalData[$key] = $value;
             }
         }
+
+        if ( $isAdditionalDataHolder ) {
+            $result->setAdditionalData($additionalData);
+        }
     }
 
     /**