set method
Implementation
List<T?>? set(List<T?>? os) {
if (os != null && os.every((e) => e == null)) {
os = null;
}
if (_listIdenticalEquality.equals(os, _entities)) return os;
if (os == null) {
_ids = null;
_entities = null;
_entitiesTime = null;
} else {
var ids = _getEntitiesIDs(os);
_ids = ids;
_entities = os.toList();
_entitiesTime = DateTime.now();
}
return _entities;
}