onSnapshot
external fun onSnapshot(reference: DocumentReference, next: (snapshot: DocumentSnapshot) -> Unit, error: (<Error class: unknown class>) -> Unit): Unsubscribe(source)
external fun onSnapshot(reference: DocumentReference, options: <Error class: unknown class>, next: (snapshot: DocumentSnapshot) -> Unit, error: (<Error class: unknown class>) -> Unit): Unsubscribe(source)
external fun onSnapshot(reference: Query, next: (snapshot: QuerySnapshot) -> Unit, error: (<Error class: unknown class>) -> Unit): Unsubscribe(source)
external fun onSnapshot(reference: Query, options: <Error class: unknown class>, next: (snapshot: QuerySnapshot) -> Unit, error: (<Error class: unknown class>) -> Unit): Unsubscribe(source)