Template shenannigans with multiple datatypes

[zjh]

On Friday, 13 May 2022 at 08:28:56 UTC, vit wrote:

>...


```d
...
this(DataSources dataSources){
     this.dataSources = dataSources;
}
...
return new MultiGraph!(staticMap!(PointerTarget, Ts))(ts);//ts
```

How is `ts` convert to `DataSources`?