https://firebase.google.com/docs/reference/android/com/google/firebase/firestore/pipeline/evaluation/TimestampKt
TimestampKt | Firebase SDKs for Android
firebasesdksandroid
https://docs.cloud.google.com/java/docs/reference/protobuf/latest/com.google.protobuf.TimestampKt.Dsl
Class TimestampKt.Dsl (3.19.4) | Java client libraries | Google Cloud Documentation