driveItem.additionalDataManager().put("@microsoft.graph.conflictBehavior", new JsonPrimitive("rename")) not working

[vikasprabhakar]

Expected behavior

After enable the flag "@microsoft.graph.conflictBehavior": "rename", the duplicate folder will create with modified name (if existing folder name is "folder" then new folder will create with name "folder1")

Code snippet:
DriveItem driveItem = new DriveItem();
driveItem.name = folder;
driveItem.folder = new Folder();
driveItem.folder.additionalDataManager().put("@microsoft.graph.conflictBehavior", new JsonPrimitive("rename"));

Actual behavior

Giving conflict error: com.microsoft.graph.http.GraphServiceException: Error code: nameAlreadyExists
Error message: The specified item name already exists.
SdkVersion : graph-java/v1.7.1
SdkVersion : graph-java/v1.7.1
Authorization : Bearer [...]
{"folder":{},"name":"folder"}

409 : Conflict

Steps to reproduce the behavior

1. Using Micosoft graph SDK 1.7.1 version
2. Call "Create folder" api two times with same folder name

[vikasprabhakar]

The possible cause is "transient" field type of "additionalDataManager" in Entity class. During serialisation of AdditionalDataManager, the "additionalData" (i.e "@microsoft.graph.conflictBehavior" : "rename) will not add in payload.
public class Entity implements IJsonBackedObject {

private transient AdditionalDataManager additionalDataManager = new AdditionalDataManager(this);

[vikasprabhakar]

Hi @ramsessanchez , please provide your feedbacks on https://github.com/microsoftgraph/msgraph-sdk-java/pull/375