Quickstart broken

I followed all the steps here: https://ai.azure.com/doc/azure/ai-foundry/quickstarts/get-started-code, but VS Code complains about:

Arguments missing for parameters "subscription_id", "resource_group_name", "project_name"Pylance[reportCallIssue](https://github.com/microsoft/pylance-release/blob/main/docs/diagnostics/reportCallIssue.md)
class AIProjectClient(
    endpoint: str,
    subscription_id: str,
    resource_group_name: str,
    project_name: str,
    credential: TokenCredential,
    **kwargs: Any
)

and

Cannot access attribute "get_openai_client" for class "AIProjectClient"
  Attribute "get_openai_client" is unknownPylance[reportAttributeAccessIssue](https://github.com/microsoft/pylance-release/blob/main/docs/diagnostics/reportAttributeAccessIssue.md)
(function) get_openai_client: Unknown

And indeed it doesn't run.

https://github.com/azure-ai-foundry/foundry-samples/blob/main/samples/microsoft/python/mslearn-resources/quickstart/quickstart.py
cc @dargilco

Start with samples/microsoft/python/mslearn-resources/quickstart/quickstart.py and compare its AIProjectClient construction and get_openai_client usage with the signatures reported by Pylance. Run the quickstart and verify that the diagnostics are resolved and the sample executes successfully.