getOnce static method
Implementation
static Future<List> getOnce(String reference) async {
DatabaseReference ref = FirebaseDatabase.instance.ref(reference);
DataSnapshot snapshot = await ref.get();
Map mapX = snapshot.value as Map;
List retVal = [];
for (var i = 0; i < mapX.keys.length; i++) {
retVal.add(JeaFire.decodeAndTagAddEndElement(
mapX.keys.elementAt(i), mapX.values.elementAt(i)));
}
return retVal;
}