Support mocking Nexus operation with operation reference #2235

Job	Run time
cloud-test (oldstable)	18s
cloud-test (oldstable)	18s
build-and-test (ubuntu-latest, oldstable)	17m 1s
build-and-test (ubuntu-latest, oldstable)	17m 1s
cloud-test (stable)	21s
cloud-test (stable)	21s
build-and-test (ubuntu-latest, stable)	25m 56s
build-and-test (ubuntu-latest, stable)	25m 56s
build-and-test (macos-intel, oldstable)	17m 6s
build-and-test (macos-intel, oldstable)	17m 6s
build-and-test (macos-intel, stable)	17m 27s
build-and-test (macos-intel, stable)	17m 27s
build-and-test (macos-arm, oldstable)	17m 8s
build-and-test (macos-arm, oldstable)	17m 8s
build-and-test (macos-arm, stable)	16m 51s
build-and-test (macos-arm, stable)	16m 51s
build-and-test (windows-latest, oldstable)	21m 24s
build-and-test (windows-latest, oldstable)	21m 24s
build-and-test (windows-latest, stable)	11m 11s
build-and-test (windows-latest, stable)	21m 19s
features-test / test	1m 57s
features-test / test	1m 57s
	5h 3m 28s

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