presto-kudu/src/main/java/io/prestosql/plugin/kudu/KuduRecordSet.java/KuduRecordSet/getColumnTypes
class KuduRecordSet:    @Override
    public List<Type> getColumnTypes()
    {
        return columns.stream()
                .map(column -> ((KuduColumnHandle) column).getType())
                .collect(toImmutableList());
    }