public long getUnsignedInteger(int offset) {
        return 0xFFFFFFFFL & getInteger(offset);
    }
Converts 4 bytes(little-endian) starting from {@code position() + offset} to
unsigned integer.

@param offset zero-based relative offset, 1 means the second byte
              starting from {@link #position()}
@return unsigned integer
clickhouse-data/src/main/java/com/clickhouse/data/ClickHouseByteBuffer.java