Update documentation and comment. (#1091) #2661

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Job	Run time
softhsm2-test (1.65.0, hsm,hsm-tests-pkcs11)	7m 2s
build (ubuntu-latest, 1.65.0, --no-default-features)	8m 44s
softhsm2-test (stable, hsm,hsm-tests-pkcs11)	5m 8s
pykmip-test (1.65.0, hsm)	7m 18s
build (ubuntu-latest, 1.65.0)	10m 56s
softhsm2-test (beta, hsm,hsm-tests-pkcs11)	5m 22s
pykmip-test (1.65.0, hsm,hsm-tests-kmip)	7m 32s
build (ubuntu-latest, 1.65.0, --features all)	9m 57s
pykmip-test (stable, hsm)	5m 18s
build (ubuntu-latest, stable, --no-default-features)	6m 45s
pykmip-test (stable, hsm,hsm-tests-kmip)	5m 56s
build (ubuntu-latest, stable)	8m 28s
pykmip-test (beta, hsm)	5m 28s
build (ubuntu-latest, stable, --features all)	7m 24s
pykmip-test (beta, hsm,hsm-tests-kmip)	5m 31s
build (ubuntu-latest, beta, --no-default-features)	6m 43s
build (ubuntu-latest, beta)	8m 16s
build (ubuntu-latest, beta, --features all)	7m 4s
	2h 8m 52s

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