presto-spi/src/main/java/io/prestosql/spi/block/Int128ArrayBlockBuilder.java/Int128ArrayBlockBuilder/appendNull
class Int128ArrayBlockBuilder:    @Override
    public BlockBuilder appendNull()
    {
        if (valueIsNull.length <= positionCount) {
            growCapacity();
        }
        if (entryPositionCount != 0) {
            throw new IllegalStateException("Current entry must be closed before a null can be written");
        }

        valueIsNull[positionCount] = true;

        hasNullValue = true;
        positionCount++;
        if (blockBuilderStatus != null) {
            blockBuilderStatus.addBytes(Byte.BYTES + INT128_BYTES);
        }
        return this;
    }