private boolean isValidChild(int archiveId, int childId) {
	anInt662++;
	if (!isInitialized())
	    return false;
	if (archiveId < 0 || childId < 0 || archiveId >= indexTable.amountChildEntries.length || childId >= indexTable.amountChildEntries[archiveId]) {
	    if (Class285.aBoolean4741)
		throw new IllegalArgumentException(String.valueOf(archiveId) + "," + childId);
	    return false;
	}
	return true;
    }