presto-spi/src/main/java/io/prestosql/spi/block/IntArrayBlockBuilder.java/IntArrayBlockBuilder/appendNull
class IntArrayBlockBuilder:    @Override
    public BlockBuilder appendNull()
    {
        if (values.length <= positionCount) {
            growCapacity();
        }

        valueIsNull[positionCount] = true;

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