presto-spi/src/main/java/io/prestosql/spi/block/ColumnarArray.java/ColumnarArray/ColumnarArray
class ColumnarArray:    private ColumnarArray(Block nullCheckBlock, int offsetsOffset, int[] offsets, Block elementsBlock)
    {
        this.nullCheckBlock = nullCheckBlock;
        this.offsetsOffset = offsetsOffset;
        this.offsets = offsets;
        this.elementsBlock = elementsBlock;
    }