API endpoint users.by_user_id(self.user_id).get().todo.lists.get() does not work

[Serrindipity]

Describe the bug

I am trying to get all of my task lists. I have my app set up with the ClientSecretCredential flow, and when I call the following:

user = await self.app_client.users.by_user_id(self.user_id).get()

in order to call:

res2= await user.todo.lists.get()

the todo field is None:

User(additional_data={'@odata.context': 'https://graph.microsoft.com/v1.0/$metadata#users/$entity'}, ... todo=None, ... )

which means that the previous call to users.todo.lists errors with AttributeError: 'NoneType' object has no attribute 'lists'

Is this expected behavior? If so, how do I call this endpoint?

Expected behavior

In the graph explorer, the query:

GET https://graph.microsoft.com/v1.0/users/{userid}/todo/lists

returns all of my task lists. I'd like the above code snippets to also return the lists.

How to reproduce

Initialize Graph and app_client as in this tutorial then:

user = await self.app_client.users.by_user_id(USER_ID).get()
res2 = await user.todo.lists.get()

SDK Version

1.8.0

Latest version known to work for scenario above?

No response

Known Workarounds

No response

Debug output

Click to expand log

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### Configuration

- OS: MacOS Sonoma 14.3

### Other information

_No response_

[shemogumbe]

Hello @Serrindipity thanks for using the SDK and for raising this.

I see the todo is None, this could be for a number of reasons, including, there being no registered Tasks for the user in question.

Also, the requestBuilder corresponding to GET https://graph.microsoft.com/v1.0/users/{userid}/todo/lists is https://github.com/microsoftgraph/msgraph-sdk-python/blob/main/msgraph/generated/users/item/todo/lists/lists_request_builder.py

[Serrindipity]

I know that the endpoint itself works, and that there are tasks to return. As quoted above:

Expected behavior

In the graph explorer, the query:

GET https://graph.microsoft.com/v1.0/users/{userid}/todo/lists

returns all of my task lists. I'd like the above code snippets to also return the lists.

Running the above request in the Graph Explorer returns the necessary lists. As for the request builder, I think the issue is that the user's 'todo' attribute is None, so it never even gets to use the request builder. Not sure where else to go from here.

[Serrindipity]

Any update on this?