private byte[] loadRawTrie() throws IOException
{
SimpleVIntTrieBuilder b = new SimpleVIntTrieBuilder(new VIntValueReader(_file));
// To re-order or not? Reordering can increase speed slightly (5-10%)
b.setReorderEntries(true);
return b.build().serialize();
}
public static void main(String[] args) throws Exception
{
if (args.length != 1) {