fix: 非同期関連のtodoとfixmeを解消 #3077

Job	Run time
actionlint	14s
build-and-test-java-api (windows-latest)	7m 6s
build-and-test-java-api (macos-latest)	3m 2s
build-and-test-java-api (ubuntu-latest)	2m 41s
build-and-test-python-api (windows-latest)	7m 35s
build-and-test-python-api (macos-latest)	3m 21s
build-and-test-python-api (ubuntu-latest)	3m 14s
build-unix-cpp-example (macos-latest, osx-x64-cpu-cpp-shared)	2m 34s
build-windows-cpp-example	4m 5s
build-unix-cpp-example (ubuntu-latest, linux-x64-cpu-cpp-shared)	1m 44s
c-header	43s
rust-integration-test-strategy-matrix	1s
rust-lint	3m 5s
rust-unit-test	3m 0s
shellcheck	11s
validate-cargo-lock	22s
rust-integration-test (macos-12)	2m 15s
rust-integration-test (ubuntu-20.04)	1m 23s
	46m 36s

Provide feedback