CuteEntityManager

findById called with any invalid id (especially when called with -1!) should return nullptr, but it seems it doesn't.

auto incId = this->get_dbId();
// debug evaluation: incId == -1 here
auto em = EntityManager::getDefaultInstance();
auto oldInc = em->findById<AttendanceIncident>(incId);
// debug evaluation: oldInc == 0x6d3.... now
if (oldInc.isNull()) {
// never enters this
}