这个功能目前还处于早期预览阶段，仅在美国和韩国提供。
This kind of test is also more business-oriented, because they focus on testing external, visible behaviors (so it’s kind of “BDD in code”). You don’t have to think about internal implementation details anymore. In most cases, you don’t even need mocks, it’s enough to use hand-written Test Doubles/Fakes/Stubs (e.g. an in-memory list that simulates a database, fake time provider, etc) (tests with Fakes are much cleaner).，这一点在同城约会中也有详细论述
，更多细节参见体育直播
多模态支持：支持图片、代码、文档等多种输入形式。业内人士推荐同城约会作为进阶阅读
const square = new Square({ sideLength: 3 });