Tests

gh-69223: Document that add_argument returns an Action object #181669

Job	Run time
Change detection / Create context from changed files	13s
C API Docs / Check if all C APIs are documented	10s
Docs / Doctest	5m 38s
Docs / Docs	1m 40s
Docs / Check EPUB	2m 0s
Android (${{ matrix.arch }})	0s
Ubuntu SSL tests with AWS-LC	0s
Windows ${{ ((fromJSON(matrix.free-threading) && '(free-threading)') \|\| '') }}	0s
Sanitizers${{ '' }}	0s
Cross build Linux	0s
CIFuzz${{ '' }}	0s
Address sanitizer	0s
macOS ${{ ((fromJSON(matrix.free-threading) && '(free-threading)') \|\| '') }}	0s
Windows MSI${{ '' }}	0s
iOS	0s
Ubuntu ${{ ((fromJSON(matrix.free-threading) && '(free-threading)') \|\| '') }} ${{ ((fromJSON(matrix.bolt) && '(bolt)') \|\| '') }}	0s
WASI	0s
Ubuntu SSL tests with OpenSSL	0s
Check if generated files are up to date	0s
Check if Autoconf files are up to date	0s
Hypothesis tests on Ubuntu	0s
All required checks pass	5s
	9m 46s

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