private function writeChunk(Chunk $chunk)
{
$binary = $chunk->toBinary(true);
$index = LevelDB::chunkIndex($chunk->getX(), $chunk->getZ());
$this->db->put($index . self::ENTRY_TERRAIN, substr($binary, 8, -1));
$this->db->put($index . self::ENTRY_FLAGS, substr($binary, -1));
$this->db->put($index . self::ENTRY_VERSION, "");
}