https://firebase-dot-devsite-v2-prod.appspot.com/docs/reference/kotlin/com/google/firebase/firestore/AggregateField.SumAggregateField
AggregateField.SumAggregateField | Firebase SDKs for Android
firebasesdksandroid
https://firebase.google.com/docs/reference/js/firestore_lite.aggregatefield.md?authuser=0
AggregateField class | Firebase JavaScript API reference
javascript apiclassfirebasereference
https://docs.cloud.google.com/java/docs/reference/google-cloud-firestore/latest/com.google.cloud.firestore.AggregateField.SumAggregateField?authuser=2
Class AggregateField.SumAggregateField (3.41.0) | Java client libraries | Google Cloud Documentation
https://docs.cloud.google.com/java/docs/reference/google-cloud-firestore/latest/com.google.cloud.firestore.AggregateField.CountAggregateField?authuser=2
Class AggregateField.CountAggregateField (3.41.0) | Java client libraries | Google Cloud...
java clientclass