Refactor internals of openapi class #1040

Job	Run time
check-commits	11s
build / build	17s
lint / lint (3.11)	31s
lint / lint (3.12)	41s
docs / no-test	0s
docs / test	1m 5s
codeql / Analyze	59s
test / test (nightly, /relocated/djnd/, true, 3.11)	14m 10s
test / test (latest, 3.11, true)	16m 39s
test / test (3.61, true, true, 3.10)	14m 41s
test / test (3.49, true, 3.10)	15m 13s
test / test (3.39, 3.12)	15m 50s
test / test (3.28, true, 3.13)	15m 26s
test / test (3.22, 3.9)	13m 29s
test / test (3.21, true, /relocated/djnd/, 3.9)	13m 19s
ready-to-ship	1s
	2h 2m 32s

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