getID method
Implementation
dynamic getID(O o, {EntityHandler<O>? entityHandler}) {
if (o is Entity) {
return o.getID();
} else if (entityHandler != null) {
return entityHandler.getID(o);
} else if (o is Map) {
return o['id'];
} else {
throw StateError('getID: No EntityHandler provided for: $o');
}
}