feat: From impl for variant #4512

Job	Run time
test ubuntu-latest stable --no-default-features	1m 39s
test ubuntu-latest stable	1m 29s
doctest	1m 21s
feature-checks	3m 33s
test ubuntu-latest stable --all-features	2m 30s
test ubuntu-latest nightly --no-default-features	1m 13s
wasm-unknown	52s
test ubuntu-latest nightly	1m 17s
wasm-wasi	1m 10s
test ubuntu-latest nightly --all-features	2m 18s
test ubuntu-latest 1.79 --no-default-features	52s
cfg-check	31s
test ubuntu-latest 1.79	36s
test windows-latest stable --no-default-features	4m 42s
check no_std	20s
clippy	45s
test windows-latest stable	6m 1s
test windows-latest stable --all-features	5m 24s
docs	58s
test windows-latest nightly --no-default-features	3m 13s
fmt	13s
test windows-latest nightly	3m 58s
test windows-latest nightly --all-features	4m 41s
test windows-latest 1.79 --no-default-features	2m 20s
test windows-latest 1.79	1m 39s
	53m 35s

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