update

abstract fun update(documentReference: DocumentReference, data: JsAny): WriteBatch(source)
abstract fun update(documentReference: DocumentReference, field: String, value: JsAny?, vararg moreFieldsAndValues: JsAny?): WriteBatch(source)
abstract fun update(documentReference: DocumentReference, field: FieldPath, value: JsAny?, vararg moreFieldsAndValues: JsAny?): WriteBatch(source)