Python SDK (azure-ai-contentunderstanding 1.0.1) does not expose usage field returned by REST API

[ElisaPiccin]

• Package Name: azure-ai-contentunderstanding
• Package Version: 1.0.1
• Operating System: Windows
• Python Version: 3.12

Bug description
With azure-ai-contentunderstanding==1.0.1, the usage block returned by the Content Understanding REST API does not appear in the Python SDK poller result (poller.result() / AnalysisResult).

To Reproduce

client = ContentUnderstandingClient(
    endpoint=AZURE_AI_ENDPOINT,
    # api_version=AZURE_AI_API_VERSION,
    credential=DefaultAzureCredential(),
    logging_enable=True
)

poller = client.begin_analyze(analyzer_id=ANALYZER_ID, inputs=[
                AnalysisInput(
                    data=file_bytes 
                )
            ])
result: AnalysisResult = poller.result() # <-- does NOT include "usage" data

result_str = json.dumps(result.as_dict(), indent=2)
print(result_str)

Expected behavior
usage should be accessible from the SDK result.

Screenshots

Observed
REST response includes usage (document pages, contextualization tokens, token breakdown), while Python SDK result does not expose it.

This seems to be a REST/SDK model parity gap.

[chienyuanchang]

Hi @ElisaPiccin thank you so much for reporting this issue. We will investigate this.