Group code in blocks

source/RobotAPI/libraries/aron/core/codegenerator/codeWriter/cpp/serializer/toplevel/ObjectClass.cpp

@@ -149,7 +149,8 @@ namespace armarx::aron::cppserializer::serializer
 
             child_b->addLine("w.writeKey(\"" + key + "\");");
             child_b->appendBlock(child_s->getWriteBlock(key));
-            block_if_data->appendBlock(child_b);
+            block_if_data->addBlock(child_b);
+            block_if_data->addLine("");
         }
 
         block_if_data->addLine("if (!__aronExtends)");