https://docs.cloud.google.com/firestore/docs/reference/rest/v1/DocumentMask
DocumentMask | Firestore | Google Cloud Documentation
google cloudfirestoredocumentation
https://docs.cloud.google.com/firestore/docs/reference/rest/v1beta1/DocumentMask
DocumentMask | Firestore | Google Cloud Documentation
google cloudfirestoredocumentation
https://firebase.google.com/docs/firestore/reference/rest/v1beta1/DocumentMask?authuser=4
DocumentMask | Firebase
firebase