How do I get the stage passed to "cdk deploy --stage beta" in the cdk code

How do I get the stage name "beta" passed to "cdk deploy --stage beta" in the cdk code in ../infrastructure/stacks/chaliceapp.py?

In other words can I get the stage name and use it here?:


Start by reading ../infrastructure/stacks/chaliceapp.py and the deployment path invoked by `cdk deploy --stage beta`. Confirm whether the stage value is exposed to that code and document or implement the supported behavior, with completion shown by a reproducible beta deployment using the command.

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