Make comment cool
// | r | Nullable(UInt8) |
// | s | Array(String) |
// ---------------------------------
-//
-// As the `DateTime64` encoding is not implemented in `clickhouse-rs`, the
-// columns `k`, `l`, `m` and `n` commented out everywhere in the file.
use std::{
net::{Ipv4Addr, Ipv6Addr},
