text: public BlockPackedReaderIterator(DataInput in, int packedIntsVersion, int blockSize, long valueCount) {checkBlockSize(blockSize, MIN_BLOCK_SIZE, MAX_BLOCK_SIZE);this.packedIntsVersion = packedIntsVersion;this.blockSize = blockSize;this.values = new long[blockSize];this.valuesRef = new LongsRef(this.values, 0, 0);reset(in, valueCount);}