Justin Black d63caf2539
[python-experimental] improves type hints of optional object properties (#13314)
* Adds Unset type hint for use cases containing additional properties

* Simplifies no addProps type hint template

* Unset type hints added when additionalProperties are off

* Adds __getitem__ unset fix

* Adds unset test

* Fixes non overload method when addprops are present

* Sample regenrated, tests added, readme updated

* Unit test sample updated

* Reverts version files
2022-08-30 16:44:30 -07:00
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