one<T> method
Checks if a document exists in the RDB.
Implementation
@override
Future<bool> one<T>(dynamic object, { String? subcollection }) async {
final String? className = RDB.classNames[object.runtimeType];
if (className == null) {
throw UnsupportedError('No class name found for type: $className. Consider re-generating Firestorm data classes.');
}
if (object.id == null) {
return false;
}
String path = RDB.constructPathForClassAndID(className, object.id, subcollection: subcollection);
final snapshot = await RDB.instance.ref(path).get();
return snapshot.exists;
}