Refactored and renamed getAuthenticatingNamespaceObject(), added more type hints

CloudObjects/SDK/WebAPI/APIClientFactory.php

@@ -221,7 +221,7 @@ class APIClientFactory {
         $this->objectRetriever = $objectRetriever;
         $this->namespace = isset($namespaceCoid)
             ? $objectRetriever->getObjectNode($namespaceCoid)
-            : $objectRetriever->getAuthenticatingNamespaceObject();
+            : $objectRetriever->getAuthenticatingNamespaceObjectNode();
         
         $this->reader = new NodeReader([
             'prefixes' => [