kotlin - .getDefaultInstance() 和 .newBuilder().build() 之间有区别吗？

Question

在 Kotlin 中使用 gRPC API 执行此操作。这两者有区别吗？

ApiRequest.newBuilder().build()

和

ApiRequest.getDefaultInstance()

谢谢

Answer 1

来自 https://developers.google.com/protocol-buffers/docs/reference/java-generated

static Foo getDefaultInstance(): Returns the singleton instance of Foo. This instance's contents are identical to what you'd get if you called Foo.newBuilder().build() (so all singular fields are unset and all repeated fields are empty). Note that the default instance of a message can be used as a factory by calling its newBuilderForType() method.