store method
Implementation
Future<int> store([MP? m]) async {
if (kind == FKind.tmp) return 0;
if (storedAt > 0) return this.id;
if (storing != null) return storing!;
MP mp = {
...toMap(),
...?m,
'stored_at': unixSeconds,
};
if (mp['id'] case int id) return id;
//mp.remove('id');
final id = mp['id'] = ++db.lastId;
final isOk = await ctrl.store(mp);
if (!isOk) return 0;
this.id = id;
storage[id] = this;
return id;
}