presto-spi/src/main/java/io/prestosql/spi/block/RunLengthEncodedBlock.java/RunLengthEncodedBlock/getObject
class RunLengthEncodedBlock:    @Override
    public <T> T getObject(int position, Class<T> clazz)
    {
        checkReadablePosition(position);
        return value.getObject(0, clazz);
    }