wsgi

Sometimes it might be handy to easily get a header's value as int, where validation errors would automatically result in an HTTP 400, along the lines of req.get_header_as_datetime & [req.get_param_as_int](https://falcon.readthedocs.io/en/stable/api/request_and_response_wsgi.ht

The docs do not give a format option for iso date with microseconds. Is this possible?

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Is your feature related to a problem? Please describe.

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Describe the solution you would like.

eg how FastAPI-Admin can specify tabler icons https://tablericons.com/

Describe alternatives you considered

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Additional context

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❓ I'm submitting a ...

• 🐞 bug report
• 🐣 feature request
• ❓ question about the decisions made in the repository

🐣 Describe the solution you'd like
It would be great to see the python 3.5+ type hints in the repository, especially for the Server api.

📋 Describe alternatives you've considered
Adding type stubs to typeshed (https://github.com/python/typeshed/tr

result_exec_date not being set when the unit of work task is executed.