$get<R> method
Implementation
@mustCallSuper
R? $get<R>(Symbol subID, [R? fallback]) {
{
if (!_immuneLock.remove(iD)) {
if ($hasPrefix) {
subID = $prefix.combine + subID; // attach fixes
_prefixes.update(iD, (v) => v..remove(_batchLock));
}
}
}
return _args[iD]?[subID] ?? _cache[iD]?[subID] ?? fallback;
}