comment validate functions #5

Job	Run time
setup-environment	14s
govulncheck	25s
checks	1m 58s
lint	3m 44s
test-coverage	5m 20s
cross-build-collector (darwin, amd64)	37s
unittest-matrix (ubuntu-latest, ~1.22)	2m 17s
cross-build-collector (darwin, arm64)	41s
unittest-matrix (ubuntu-latest, ~1.21.12)	2m 7s
cross-build-collector (linux, 386)	42s
cross-build-collector (linux, amd64)	46s
cross-build-collector (linux, arm64)	37s
cross-build-collector (linux, ppc64le)	47s
cross-build-collector (linux, arm, 7)	36s
cross-build-collector (linux, s390x)	35s
cross-build-collector (windows, 386)	41s
cross-build-collector (windows, amd64)	41s
unittest	1s
	22m 49s

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