非推奨
[[["わかりやすい","easyToUnderstand","thumb-up"],["問題の解決に役立った","solvedMyProblem","thumb-up"],["その他","otherUp","thumb-up"]],[["必要な情報がない","missingTheInformationINeed","thumb-down"],["複雑すぎる / 手順が多すぎる","tooComplicatedTooManySteps","thumb-down"],["最新ではない","outOfDate","thumb-down"],["翻訳に関する問題","translationIssue","thumb-down"],["サンプル / コードに問題がある","samplesCodeIssue","thumb-down"],["その他","otherDown","thumb-down"]],[],[],["C2DM was deprecated on June 26, 2012, and shut down on July 30, 2015. Developers who were using C2DM should migrate their applications to Firebase Cloud Messaging (FCM). The shutdown of C2DM marked the end of its service, while FCM is the current suggested replacement for developers to use.\n"]]