change: C APIからゲッター関数を無くす (#850) #2962

Job	Run time
rust-lint	9m 2s
actionlint	16s
rust-unit-test	10m 26s
shellcheck	16s
validate-cargo-lock	23s
build-and-test-java-api (windows-latest)	6m 57s
build-and-test-java-api (macos-latest)	2m 58s
build-and-test-java-api (ubuntu-latest)	2m 44s
build-and-test-python-api (windows-latest)	6m 40s
build-and-test-python-api (macos-latest)	3m 30s
build-and-test-python-api (ubuntu-latest)	3m 0s
build-unix-cpp-example (macos-latest, osx-x64-cpu-cpp-shared)	1m 32s
build-unix-cpp-example (ubuntu-latest, linux-x64-cpu-cpp-shared)	1m 28s
build-windows-cpp-example	3m 53s
c-header	44s
rust-integration-test-strategy-matrix	1s
rust-integration-test (macos-12)	2m 41s
rust-integration-test (ubuntu-20.04)	3m 57s
	1h 0m 28s

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