mysql-native Help required

[novice3]

On Thursday, 22 October 2020 at 11:04:53 UTC, Vino wrote:
> class Connections
> {
>   private Connection conn;
>   auto constr = 
> "host=localhost;port=3910;user=user;pwd=password#;db=testdb";
>   this.conn = new Connection(constr);
> }

where Connections class constructor implemented?