Patch application to add new app_role throws ODataError `Request contains a property with duplicate values.`

Hello,

I would like to add a new app_role called test to an app registration, I used following code, but got ODataError Request contains a property with duplicate values.:

from msgraph.generated.models.application import Application
from msgraph.generated.models.app_role import AppRole
from uuid import uuid4
# some other imports and client init ignored here, as not relevant

app_id = "an existing app id"
role_name = "test"
app_role = AppRole()
app_role.allowed_member_types = ["User", "Application"]
app_role.description = role_name
app_role.display_name = role_name
app_role.is_enabled = True
app_role.id = str(uuid4())
app_role.origin = "Application"
app_role.value = role_name
app = Application()
app.app_roles = [app_role]
# get() is OK
get_result = await client.applications.by_application_id(app_id).get()
# patch is KO
patch_result = await client.applications.by_application_id(app_id).patch(body=app)

The below command throws error: 'Request contains a property with duplicate values.' (code: DuplicateValue) after the internal command:
https://github.com/microsoftgraph/msgraph-sdk-python/blob/33cb15a452bd92b85ae62faaecc879761586237f/msgraph/generated/applications/item/application_item_request_builder.py#L123

Could you please give a help to explain what are the duplicate values, I checked the model of app_role, it should be OK:
https://github.com/microsoftgraph/msgraph-sdk-python/blob/main/msgraph/generated/models/app_role.py

從 msgraph/generated/applications/item/application_item_request_builder.py 中約第 123 行的 PATCH 呼叫開始，並檢查 msgraph/generated/models/app_role.py 中的 AppRole 模型。使用提供的範例重現要求，並判斷 Microsoft Graph API 將哪些值視為重複值。當原因與所需的 PATCH 行為已明確確認，且在 repository 支援的情況下包含回歸測試或文件更新時，即視為完成。