@Override
public ChunkCacheKey readObject(ObjectInput input) throws IOException {
String indexName = input.readUTF();
String fileName = input.readUTF();
int chunkId = UnsignedNumeric.readUnsignedInt(input);
return new ChunkCacheKey(indexName, fileName, chunkId);
}
@Override
public void writeObject(ObjectOutput output, ChunkCacheKey key) throws IOException {
output.writeUTF(key.indexName);
output.writeUTF(key.fileName);
UnsignedNumeric.writeUnsignedInt(output, key.chunkId);
}