Simplify impl as suggested #1556

Job	Run time
telemetry-setup	4s
changed-files / Check changed files	15s
wheel-cpp-build / compute-matrix	2s
wheel-cpp-build / 11.8.0, 3.12, amd64, rockylinux8	2m 35s
wheel-cpp-build / 12.8.0, 3.12, amd64, rockylinux8	2m 35s
wheel-cpp-build / 11.8.0, 3.12, arm64, rockylinux8	2m 57s
wheel-cpp-build / 12.8.0, 3.12, arm64, rockylinux8	3m 2s
check-nightly-ci	5s
checks / other-checks	43s
checks / check-style	2m 20s
devcontainer / amd64, 12.8, conda	3m 7s
devcontainer / amd64, 12.8, pip	4m 24s
conda-cpp-build / compute-matrix	1s
conda-cpp-build / 11.8.0, 3.10, amd64, rockylinux8	3m 37s
conda-cpp-build / 12.8.0, 3.10, amd64, rockylinux8	3m 10s
conda-cpp-build / 11.8.0, 3.10, arm64, rockylinux8	3m 9s
conda-cpp-build / 12.8.0, 3.10, arm64, rockylinux8	2m 50s
wheel-python-build	0s
wheel-python-tests	0s
conda-java-tests	0s
conda-python-build	0s
conda-cpp-tests	0s
docs-build	0s
conda-python-tests	0s
pr-builder / run	1s
telemetry-summarize	1s
	34m 58s

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