presto-orc/src/main/java/io/prestosql/orc/writer/ListColumnWriter.java/ListColumnWriter/writeBlock
class ListColumnWriter:    @Override
    public void writeBlock(Block block)
    {
        checkState(!closed);
        checkArgument(block.getPositionCount() > 0, "Block is empty");

        ColumnarArray columnarArray = toColumnarArray(block);
        writeColumnarArray(columnarArray);
    }